To see the other types of publications on this topic, follow the link: Bromomalonate.

Journal articles on the topic 'Bromomalonate'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Bromomalonate.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Li, Qingrui, Yunnian Yin, Yabo Li, et al. "A simple approach to indeno-coumarins via visible-light-induced cyclization of aryl alkynoates with diethyl bromomalonate." Organic Chemistry Frontiers 6, no. 18 (2019): 3238–43. http://dx.doi.org/10.1039/c9qo00795d.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

KATO, EISHIN, MASAYUKI OYA, TADASHI ISO, and JUN-ISHI IWAO. "Conversion of thiols into disulfides with diethyl bromomalonate." CHEMICAL & PHARMACEUTICAL BULLETIN 34, no. 2 (1986): 486–95. http://dx.doi.org/10.1248/cpb.34.486.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Amriev, R. A., L. V. Vinogradova, and F. K. Velichko. "Addition of diethyl bromomalonate and diethyl dibromomalonate to vinyltrimethylsilane." Bulletin of the Academy of Sciences of the USSR Division of Chemical Science 34, no. 10 (1985): 2223–24. http://dx.doi.org/10.1007/bf00963269.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Truksa, Scott V., Alan Nibler, Bruce S. Schatz, Kevin W. Krosley, and Gerald Jay Gleicher. "Benzylic hydrogen atom abstraction utilizing diethyl bromomalonate as a radical source." Journal of Organic Chemistry 57, no. 10 (1992): 2967–70. http://dx.doi.org/10.1021/jo00036a044.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Menn, Jean-Christophe Le, André Tallec, and Jean Sarrazin. "Obtention de cyclopropanes gem-dicarboxylate par cyclocondensation de carbanions bromo- et chloromalonate sur des accepteurs de Michaël." Canadian Journal of Chemistry 69, no. 5 (1991): 761–67. http://dx.doi.org/10.1139/v91-113.

Full text
Abstract:
Cyclopropane gem-dicarboxylates are prepared through cyclocondensation of chloro or bromomalonate carbanion and electrophilic alkenes. The carbanion can be formed in THF by deprotonation of the monohalomalonates with powdered potassium carbonate; the chloromalonate always leads to better yields. The influence of the nature and the number of substituents on the alkene reactivity has been investigated. If side reactions (for instance protonation of anionic intermediates by halomalonate) can take place, better yields are obtained when the carbanion is generated by electroreduction of dihalomalonate in the presence of the Michael acceptor. Key words: halomalonates, cyclopropane gem-dicarboxylates, electroreduction.
APA, Harvard, Vancouver, ISO, and other styles
6

Barton, William R., та Leo A. Paquette. "Generic synthesis of β-sultams via domino alkylation of bromomethanesulfonamides". Canadian Journal of Chemistry 82, № 2 (2004): 113–19. http://dx.doi.org/10.1139/v03-174.

Full text
Abstract:
Reaction of N-substituted bromomethanesulfonamides with 2 equiv of potassium carbonate and an α-halo ketone, ester, or nitrile leads directly to 3-substituted β-sultams. The first step is intermolecular and is followed by an intramolecular alkylation. The process is particularly efficient when diethyl bromomalonate and 3-chloro-2-butanone are involved. In the latter example, no competitive cyclization to form a six-membered ring is seen. The functional groups in certain of the β-sultam products can be subsequently manipulated to give bicyclic products.Key words: β-sultams, intramolecular SN2 displacement, sulfonamides, ring closing metathesis, four-membered heterocycles.
APA, Harvard, Vancouver, ISO, and other styles
7

Kang, Haixia, Jing Bai, Zhentao Xi, Manman Zhang, Yuqin Fu, and Dapeng Zou. "Reaction of 5(R)-(l-Menthoxy)-2(5H)-furanone with Diethyl Bromomalonate." Chinese Journal of Organic Chemistry 36, no. 8 (2016): 1915. http://dx.doi.org/10.6023/cjoc201601040.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Papageorgiou, George, and John E. T. Corrie. "A strategy to avoid anomalousO-alkylation of 4-hydroxyindole by diethyl bromomalonate." Journal of Heterocyclic Chemistry 42, no. 6 (2005): 1101–4. http://dx.doi.org/10.1002/jhet.5570420610.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Gu, Guangmiao, Mengmeng Huang, Jung Keun Kim, Jianye Zhang, Yabo Li, and Yangjie Wu. "Visible-light-induced photocatalyst-free C-3 functionalization of indoles with diethyl bromomalonate." Green Chemistry 22, no. 8 (2020): 2543–48. http://dx.doi.org/10.1039/d0gc00292e.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Coumbarides, Gregory Socrates, Marco Dingjan, Jason Eames, and Neluka Weerasooriya. "Investigations into the Bromination of Substituted Phenols using Diethyl Bromomalonate and Diethyl Dibromomalonate." Bulletin of the Chemical Society of Japan 74, no. 1 (2001): 179–80. http://dx.doi.org/10.1246/bcsj.74.179.

Full text
APA, Harvard, Vancouver, ISO, and other styles
11

Burshtein, K. Ya, G. V. Kryshtal', and L. A. Yanovskaya. "Factors affecting the direction of the reaction of bromomalonate ester with ?,?-unsaturated aldehydes." Bulletin of the Academy of Sciences of the USSR Division of Chemical Science 34, no. 6 (1985): 1303–4. http://dx.doi.org/10.1007/bf00956110.

Full text
APA, Harvard, Vancouver, ISO, and other styles
12

TRUKSA, S. V., A. NIBLER, B. S. SCHATZ, K. W. KROSLEY, and G. J. GLEICHER. "ChemInform Abstract: Benzylic Hydrogen Atom Abstraction Utilizing Diethyl Bromomalonate as a Radical Source." ChemInform 23, no. 42 (2010): no. http://dx.doi.org/10.1002/chin.199242104.

Full text
APA, Harvard, Vancouver, ISO, and other styles
13

Mu, Siyu, Hongxia Li, Zhilin Wu, Junmei Peng, Jinyang Chen, and Weimin He. "Electrocatalytic Three-Component Synthesis of 4-Bromopyrazoles from Acetylacetone, Hydrazine and Diethyl Bromomalonate." Chinese Journal of Organic Chemistry 42, no. 12 (2022): 4292. http://dx.doi.org/10.6023/cjoc202211002.

Full text
APA, Harvard, Vancouver, ISO, and other styles
14

Nemcsok, Tamás, Zsolt Rapi, Péter Bagi, Attila Oláh, György Keglevich, and Péter Bakó. "The Synthesis of Hydrobenzoin-Based Monoaza Crown Ethers and Their Application as Recyclable Enantioselective Catalysts." Catalysis Letters 150, no. 4 (2019): 930–38. http://dx.doi.org/10.1007/s10562-019-03013-0.

Full text
Abstract:
Abstract New recyclable monoaza-15-crown ethers have been synthesized starting from (R,R)-(+)- and (S,S)-(−)-hydrobenzoin. These macrocycles proved to be efficient and reusable phase transfer catalysts in a few asymmetric reactions under mild conditions. The asymmetric epoxidation of trans-chalcone took place with up to 81% ee, while using other chalcone derivatives, the products were formed with 68–88% ee. The hydrobenzoin-based lariat ethers were also tested in the cyclopropanation of a few electron deficient olefins using diethyl bromomalonate to afford the product with good enantioselectivities (54–75% ee). The catalysts were recovered by salt formation, followed by extraction, and were reused without the loss of the activity and effect on the enantioselectivity. Graphic Abstract The synthesis of hydrobenzoin-based monaza crown ethers and their application as recyclable enantioselective catalysts.
APA, Harvard, Vancouver, ISO, and other styles
15

Naveena Kumari, H. M., Manjunath Harihara Mathada, Mahesh Kumar, K. T. Suda, and K. M. Basavaraja. "Synthesis, Characterization, Antimicrobial Screening of 5-Bromobenzofuranyl Aryl Ureas and Carbamates." Asian Journal of Organic & Medicinal Chemistry 4, no. 4 (2019): 232–35. http://dx.doi.org/10.14233/ajomc.2019.ajomc-p215.

Full text
Abstract:
Present work reports the biologically important benzofuran aryl ureas and carbamates. The benzofuran ring was formed by reacting bromo salicylaldehyde with diethyl bromomalonate in presence of dry acetone and anhydrous potassium carbonate to obtain 5-bromo-2-ethyl carboxylate (1). The obtained ester (1) was converted into corresponding hydrazide (2) by treating with hydrazine hydrate in ethanol. Compound 2 was then converted into 5-bromobenzofuran-2-carbonyl azide (3) by treating it with sodium nitrite in dioxane and acetic acid. The compound 3 is converted into 5-bromobenzofuranyl aryl ureas (4a-e) after treating primary amines and anhydrous toluene. 5-Bromobenzofuranyl aryl carbamate (5) and ethyl carbamate (6) were also synthesized by treating compound 3 with substituted phenol in toluene and ethanol respectively. All the compounds were characterized by NMR, IR and screened for antimicrobial activities.
APA, Harvard, Vancouver, ISO, and other styles
16

Coumbarides, Gregory Socrates, Marco Dingjan, Jason Eames, and Neluka Weerasooriya. "ChemInform Abstract: Investigations into the Bromination of Substituted Phenols Using Diethyl Bromomalonate and Diethyl Dibromomalonate." ChemInform 32, no. 16 (2001): no. http://dx.doi.org/10.1002/chin.200116069.

Full text
APA, Harvard, Vancouver, ISO, and other styles
17

Xuan, Yi-ning, Shao-zhen Nie, Li-ting Dong, Jun-min Zhang та Ming Yan. "Highly Enantioselective Synthesis of Nitrocyclopropanes via Organocatalytic Conjugate Addition of Bromomalonate to α,β-Unsaturated Nitroalkenes". Organic Letters 11, № 7 (2009): 1583–86. http://dx.doi.org/10.1021/ol900227j.

Full text
APA, Harvard, Vancouver, ISO, and other styles
18

Sun, Jun-Chao, Jun-Lin Li, Cong-Bin Ji, Yi-Yuan Peng, and Xing-Ping Zeng. "Construction of Cyclopropa[c]coumarins via cascade Michael-alkylation process of 3-cyanocoumarin with 2-bromomalonate." Tetrahedron 76, no. 5 (2020): 130852. http://dx.doi.org/10.1016/j.tet.2019.130852.

Full text
APA, Harvard, Vancouver, ISO, and other styles
19

Nédélec, J. Y., and K. Nohair. "Manganese(III)-Promoted Free-Radical Addition of Dimethyl Bromomalonate to Olefins Using an Electrochemical Regeneration Procedure." Synlett 1991, no. 09 (1991): 659–60. http://dx.doi.org/10.1055/s-1991-20832.

Full text
APA, Harvard, Vancouver, ISO, and other styles
20

Lee, Hyun Joo, Sun Mi Kim, and Dae Young Kim. "Enantioselective synthesis of nitrocyclopropanes via conjugate addition of bromomalonate to nitroalkenes catalyzed by Ni(II) complexes." Tetrahedron Letters 53, no. 27 (2012): 3437–39. http://dx.doi.org/10.1016/j.tetlet.2012.04.072.

Full text
APA, Harvard, Vancouver, ISO, and other styles
21

Chande, Madhukar S., та Udayashankar S. Bhat. "ChemInform Abstract: Synthesis of Novel Spiroglucosides and Fused Ring Heterocycles from Diethyl α-Acetamido-α-bromomalonate." ChemInform 31, № 9 (2010): no. http://dx.doi.org/10.1002/chin.200009054.

Full text
APA, Harvard, Vancouver, ISO, and other styles
22

Omran, Omran Abdellah. "The Reaction of Diethyl Bromomalonate with p-tert-Butylthia-calix[4]arene: An Approach to Asymmetrical Derivatives." Molecules 14, no. 5 (2009): 1755–61. http://dx.doi.org/10.3390/molecules14051755.

Full text
APA, Harvard, Vancouver, ISO, and other styles
23

Kryshtal, Galina V., Galina M. Zhdankina, and Sergei G. Zlotin. "KOH-Promoted Synthesis of Oxirane Functional Derivatives from Diethyl Bromomalonate and Aldehydes under Phase-Transfer Catalysis Conditions." Mendeleev Communications 23, no. 1 (2013): 24–25. http://dx.doi.org/10.1016/j.mencom.2013.01.008.

Full text
APA, Harvard, Vancouver, ISO, and other styles
24

Martínez, Juan Pablo, Marc Garcia-Borràs, Sílvia Osuna, Jordi Poater, F. Matthias Bickelhaupt, and Miquel Solà. "Reaction Mechanism and Regioselectivity of the Bingel-Hirsch Addition of Dimethyl Bromomalonate to La@C 2v -C82." Chemistry - A European Journal 22, no. 17 (2016): 5953–62. http://dx.doi.org/10.1002/chem.201504668.

Full text
APA, Harvard, Vancouver, ISO, and other styles
25

H., A. H. EL-SHERIEF, MAHMOUD A.M., R. EL-EZBAWY S., and EL-WARETH A. O. SARHAN ABD. "Synthesis and Reactions of some New Benzimidazoles. Part-II." Journal of Indian Chemical Society Vol. 74, Jan 1997 (1997): 24–26. https://doi.org/10.5281/zenodo.5876923.

Full text
Abstract:
<strong>Chemistry Department, Faculty of Science, Assiut University, Assiut, 71516, Egypt</strong> <em>Manuscript received 1 February 1995, accepted 6 July 1995</em> <strong>Interaction of (</strong><em><strong>p</strong></em><strong>-benzimidazol-2-ylphenoxy)acetic acid hydrazide (1) with is othiocyanates affords acetylthiosemicarbazides (2a-c) which on cyclisation give 3a-c. Reaction of 3a with alkyl halide, ethyl chloroacetate and/or diethyl bromomalonate affords S-alkyl derivatives (4a-e). Condensation of 3a with p-substituted-phenacyl bromides gives 5a-c. Treatment of 3a with N-aryl and N-heterocyclic-2- chloroacetamides gives 6a-c. Reaction of 3a with CH<sub>2</sub>O in the presence of morpholine or p-toluidine affords the Mannich bases (7a,h). Cyclodehydration of 2a-c with phosphoric acid gives the thiadiazoles (8a-c). Interaction of 1 with CS<sub>2</sub> gives 9 which is reacted with hydrazine hydrate to give 10. Condensation of 10 with aromatic aldehydes gives the azines (11a-1). Reaction of 10 with p-substituted&shy;phenacyl bromide gives the uncyclised products 12a-c rather than cyclised ones 13a-c. Several compounds are screened for antibacterial activities.</strong>
APA, Harvard, Vancouver, ISO, and other styles
26

HIROI, Kunio, and Yoshihisa ARINAGA. "Stereocontrolled Asymmetric Synthesis of Optically Active Acylcyclopropane Derivatives by Michael Additions of Bromomalonate to Chiral .ALPHA.-Acylvinylic Sulfoxides." CHEMICAL & PHARMACEUTICAL BULLETIN 42, no. 4 (1994): 985–87. http://dx.doi.org/10.1248/cpb.42.985.

Full text
APA, Harvard, Vancouver, ISO, and other styles
27

Miersch, Anne, Klaus Harms, and Gerhard Hilt. "Zinc-mediated addition of diethyl bromomalonate to alkynes for the cascade reaction towards polysubstituted pyranones and tetracarbonyl derivatives." Chem. Commun. 50, no. 5 (2014): 542–44. http://dx.doi.org/10.1039/c3cc46788k.

Full text
APA, Harvard, Vancouver, ISO, and other styles
28

Lee, Hyun Joo, Sun Mi Kim, and Dae Young Kim. "ChemInform Abstract: Enantioselective Synthesis of Nitrocyclopropanes via Conjugate Addition of Bromomalonate to Nitroalkenes Catalyzed by Ni(II) Complexes." ChemInform 43, no. 41 (2012): no. http://dx.doi.org/10.1002/chin.201241053.

Full text
APA, Harvard, Vancouver, ISO, and other styles
29

NEDELEC, J. Y., and K. NOHAIR. "ChemInform Abstract: Manganese(III)-Promoted Free-Radical Addition of Dimethyl Bromomalonate to Olefins Using an Electrochemical Regeneration Procedure." ChemInform 23, no. 4 (2010): no. http://dx.doi.org/10.1002/chin.199204048.

Full text
APA, Harvard, Vancouver, ISO, and other styles
30

KANVINDE, M. N., R. M. KELKAR, and M. V. PARADKAR. "ChemInform Abstract: Unusual Behaviour of Diethyl Bromomalonate with 2-Hydroxydeoxybenzoins. Convenient Synthesis of 2-Aryl-3(2H)-benzofuranones." ChemInform 24, no. 35 (2010): no. http://dx.doi.org/10.1002/chin.199335175.

Full text
APA, Harvard, Vancouver, ISO, and other styles
31

Kryshtal, Galina V., Galina M. Zhdankina, and Sergei G. Zlotin. "ChemInform Abstract: KOH-Promoted Synthesis of Oxirane Functional Derivatives from Diethyl Bromomalonate and Aldehydes under Phase-Transfer Catalysis Conditions." ChemInform 44, no. 21 (2013): no. http://dx.doi.org/10.1002/chin.201321098.

Full text
APA, Harvard, Vancouver, ISO, and other styles
32

Bakandritsos, Aristides, Demetrios D. Chronopoulos, Petr Jakubec, et al. "High-Performance Supercapacitors Based on a Zwitterionic Network of Covalently Functionalized Graphene with Iron Tetraaminophthalocyanine." Advanced Functional Materials 28 (May 21, 2018): 1801111. https://doi.org/10.1002/adfm.201801111.

Full text
Abstract:
Graphene derivatives are promising candidates as electrode materials in supercapacitor cells, therefore, functionalization strategies are pursued to improve their performance. A scalable approach is reported for preparing a covalently and homogenously functionalized graphene with iron tetraaminophthalocyanine (FePc-NH2) with a high degree of functionalization. This is achieved by exploiting fluorographene&rsquo;s reactivity with the diethyl bromomalonate, producing graphene-dicarboxylic acid after hydrolysis, which is conjugated with FePc-NH2. The material exhibits an ultrahigh gravimetric specific capacitance of 960 F g&minus;1 at 1 A g&minus;1 and zero losses upon charging&ndash;discharging cycling. The energy density of 59 Wh kg&minus;1 is eminent among supercapacitors operating in aqueous electrolytes with graphene-based electrode materials. This is attributed to the structural and functional synergy of the covalently bound components, giving rise to a zwitterionic surface with extensive &pi;&ndash;&pi; stacking, but not graphene restacking, all being very beneficial for charge and ionic transport. The safety of the proposed system, owing to the benign Na2SO4 aqueous electrolyte, the high capacitance, energy density, and potential of preparing the electrode material on a large-scale and at low cost make the reported strategy very attractive for development of supercapacitors based on the covalent attachment of suitable molecules onto graphene toward high synergy hybrids.
APA, Harvard, Vancouver, ISO, and other styles
33

Peng, Ru‐Fang, Guan‐Wu Wang, Ye‐Bing Shen, et al. "Solvent‐Free Reactions of Fullerenes with Diethyl Bromomalonate in the Presence of Inorganic Bases Under High‐Speed Vibration Milling Conditions." Synthetic Communications 34, no. 11 (2004): 2117–26. http://dx.doi.org/10.1081/scc-120030320.

Full text
APA, Harvard, Vancouver, ISO, and other styles
34

Haldar, Pranab, Bishnupada Dutta, Joyram Guin, and Jayanta K. Ray. "Uncatalyzed condensation between aryl-1,2-diamines and diethyl bromomalonate: a one-pot access to substituted ethyl 3-hydroxyquinoxaline-2-carboxylates." Tetrahedron Letters 48, no. 33 (2007): 5855–57. http://dx.doi.org/10.1016/j.tetlet.2007.06.065.

Full text
APA, Harvard, Vancouver, ISO, and other styles
35

HIROI, K., та Y. ARINAGA. "ChemInform Abstract: Stereocontrolled Asymmetric Synthesis of Optically Active Acylcyclopropane Derivatives by Michael Additions of Bromomalonate to Chiral α-Acylvinylic Sulfoxides." ChemInform 25, № 49 (2010): no. http://dx.doi.org/10.1002/chin.199449045.

Full text
APA, Harvard, Vancouver, ISO, and other styles
36

Miersch, Anne, Klaus Harms, and Gerhard Hilt. "ChemInform Abstract: Zinc-Mediated Addition of Diethyl Bromomalonate to Alkynes for the Cascade Reaction Towards Polysubstituted Pyranones and Tetracarbonyl Derivatives." ChemInform 45, no. 19 (2014): no. http://dx.doi.org/10.1002/chin.201419146.

Full text
APA, Harvard, Vancouver, ISO, and other styles
37

Wolfe, Saul, Stephen Ro, Chan-Kyung Kim та Zheng Shi. "Synthesis and decarboxylation of Δ2-cephem-4,4-dicarboxylic acids". Canadian Journal of Chemistry 79, № 8 (2001): 1238–58. http://dx.doi.org/10.1139/v01-100.

Full text
Abstract:
Penicillin V was converted in 14 steps into Δ2-cephems having hydrogen at C-3, hydrogen or ethyl at C-2, and two methoxycarbonyl, two benzyloxycarbonyl, or one methoxycarbonyl and one benzyloxycarbonyl substituent at C-4. Deprotection of these Δ2-cephem-4,4-dicarboxylic acid esters by alkaline hydrolysis (in the case of methyl esters) or hydrogenolysis (in the case of benzyl esters) led in all cases to rapid decarboxylation of the Δ2-cephem-4,4-dicarboxylic acid or Δ2-cephem-4,4-dicarboxylic acid monoester. With hydrogen at C-2, hydrolysis of the dimethyl ester with 1 equiv of base produced a Δ2-cephem. With 2 equiv of base, and with all compounds having methyl at C-2, hydrolysis or hydrogenolysis afforded 4α-substituted-Δ2-cephems. In contrast, simpler benzyl or methyl acetamidomalonates could be deprotected without difficulty to afford stable malonic acids. Reasons for the differences in ease of decarboxylation were examined using semiempirical (AM1) and ab initio (3-21G) molecular orbital calculations. The decarboxylation barriers of unionized cephem or acetamido malonic acids were found to be high (35–40 kcal mol–1). Although the monoanion of acetamidomalonic acid retained a high barrier, the epimeric monoanions of a Δ2-cephem malonic acid decarboxylated with barriers of only 2 kcal mol–1.Key words: mercaptoazetidinone, bromomalonate esters, MO calculations, sulfoxides, hydrogenolysis.
APA, Harvard, Vancouver, ISO, and other styles
38

Wei, Xian-Wen, Anthony G. Avent, Olga V. Boltalina та ін. "ChemInform Abstract: Reaction of C60F18 with Diethyl Bromomalonate: Diversion of the Bingel Reaction and Formation of the First 18π Annulenic Fullerene." ChemInform 33, № 16 (2010): no. http://dx.doi.org/10.1002/chin.200216121.

Full text
APA, Harvard, Vancouver, ISO, and other styles
39

Drandarov, Konstantin, Ioannis Tiritiris, and Willi Kantlehner. "Orthoamides and iminium salts, LXXXIX. Reactions of N,N,N′,N′,N″,N″,N′″,N′″-octamethyl-acetylene-bis(carboxamidinium) tetrafluoroborate with nucleophilic reagents – new methods for the preparation of amidinium salts and ketene aminalsa." Zeitschrift für Naturforschung B 70, no. 4 (2015): 225–41. http://dx.doi.org/10.1515/znb-2014-0204.

Full text
Abstract:
AbstractThe acetylene-bis(carboxamidinium) salt 4 dehydrates carboxylic acids to the corresponding anhydrides, as the byproduct 2-oxo-but-2-en-amidinium salt 6b was isolated. Aromatic hydroxy compounds and 2-furyl-methylmercaptan add to the triple bond of the salt 4 to give 2-aryloxy- and 2-alkylmercapto-but-2-ene-bis(amidinium) salts 7–9. According to this reaction principle, 2-organoamino-buten-2-ene-bis(amidinium) salts 10 and 11 were prepared from 4 and primary and secondary amines, whereas 4-chlorobenzhydrazide reacted with 4 to give the imidazole-3-carboxamidinium salt 13. The reaction of CH2-acidic compounds as malononitrile or ethyl cyanoacetate with the bis(amidinium) salt 4 affords 2-cyanomethylene-but-3-enamidinium salts 15. With the CH-acidic diethyl 2-bromomalonate, compound 4 undergoes a Michael-initiated ring closure cyclopropenation reaction with further ring opening by the released Br– to the corresponding 2-diethoxycarbonylmethylene-3-bromo-but-3-enamidinium salt 18. Unlike cyclopentadiene and furane, the reaction of N-methylpyrrole and bis(amidinium) salt 4 does not lead to Diels–Alder [4 + 2] cycloadduct but to the Michael-type 1:1 adduct 20. Pyrrole- and thiophene-2-carboxamidinium salts 23–25 can be prepared from compound 4 and esters of glycine, N-methylglycine (sarcosine), and mercaptoacetic acid, respectively. The derivatives of quinoxaline-2-carboxamidinium salts 29 are accessible from aromatic 1,2-diamines and compound 4. The reaction of the CH2/NH-acidic cyanoacetamide with the bis(amidinium) salt 4 produced the 3-pyrroline-2-on derivatives 33.
APA, Harvard, Vancouver, ISO, and other styles
40

Omran, Omran Abdellah. "Omran, O.-A. The Reaction of Diethyl Bromomalonate with p-tert-butylthiacalix[4]arene: An Approach to Asymmetrical Derivatives Molecules 2009, 14, 1755-1761." Molecules 14, no. 11 (2009): 4689. http://dx.doi.org/10.3390/molecules14114689.

Full text
APA, Harvard, Vancouver, ISO, and other styles
41

Besalú‐Sala, Pau, Josep M. Luis, and Miquel Solà. "Bingel–Hirsch Addition of Diethyl Bromomalonate to Ion‐Encapsulated Fullerenes M@C 60 (M=Ø, Li + , Na + , K + , Mg 2+ , Ca 2+ , and Cl − )." Chemistry – A European Journal 26, no. 63 (2020): 14481–87. http://dx.doi.org/10.1002/chem.202003208.

Full text
APA, Harvard, Vancouver, ISO, and other styles
42

Lian, Xiao-Lei, Alafate Adili, Bin Liu, Zhong-Lin Tao, and Zhi-Yong Han. "Enantioselective [4 + 1] cycloaddition of ortho-quinone methides and bromomalonates under phase-transfer catalysis." Organic & Biomolecular Chemistry 15, no. 17 (2017): 3670–73. http://dx.doi.org/10.1039/c7ob00484b.

Full text
APA, Harvard, Vancouver, ISO, and other styles
43

Yavari, Issa, Abbas Ali Esmaili, Sakineh Asghari, and Hamid Reza Bijanzadeh. "A New and Efficient One-pot Synthesis of Trialkyl 6-tert-Butylamino-2H-pyran-2-one-3,4,5-tricarboxylates." Journal of Chemical Research 23, no. 6 (1999): 368–69. http://dx.doi.org/10.1177/174751989902300612.

Full text
Abstract:
The highly reactive 1:1 intermediate produced in the reaction between tert-butyl isocyanide and dialkyl acetylenedicarboxylates is trapped by dialkyl 2-bromomalonates to yield the title compounds in fairly high yields.
APA, Harvard, Vancouver, ISO, and other styles
44

Hilt, Gerhard, Emre Babaoglu, and Klaus Harms. "Indium-Mediated Blaise-Type Reaction of Bromomalonates with Nitriles and Isocyanates." Synlett 27, no. 12 (2016): 1820–23. http://dx.doi.org/10.1055/s-0035-1561973.

Full text
APA, Harvard, Vancouver, ISO, and other styles
45

Rouh, Hossein, Yao Tang, Ting Xu, et al. "Aggregation-Induced Synthesis (AIS): Asymmetric Synthesis via Chiral Aggregates." Research 2022 (August 12, 2022): 1–9. http://dx.doi.org/10.34133/2022/9865108.

Full text
Abstract:
A new chiral aggregate-based tool for asymmetric synthesis has been developed by taking advantage of chiral aggregates of GAP (Group-Assisted Purification) reagents, N-phosphonyl imines. This tool was proven to be successful in the asymmetric GAP synthesis of functionalized 2,3-dihydrobenzofurans by reacting salicyl N-phosphonyl imines with dialkyl bromomalonates in various cosolvent systems. The chiral induction can be controlled by differentiating between two asymmetric directions simply by changing the ratios of cosolvents which are commonly adopted in AIE (aggregation-induced emission) systems. The formation of chiral aggregates was witnessed by a new analytical tool—aggregation-induced polarization (AIP). The present synthetic method will be broadly extended for general organic synthesis, particularly, for asymmetric synthesis and asymmetric catalysis in the future.
APA, Harvard, Vancouver, ISO, and other styles
46

Zhang, Yuheng, Lili Lin, Yushuang Chen, Xiaohua Liu, and Xiaoming Feng. "N ,N′ -Dioxide-Lanthanum(III)-Catalyzed Asymmetric Cyclopropanation of 2-Cyano-3-arylacrylates with 2-Bromomalonates." Advanced Synthesis & Catalysis 359, no. 11 (2017): 1831–36. http://dx.doi.org/10.1002/adsc.201700212.

Full text
APA, Harvard, Vancouver, ISO, and other styles
47

Wu, Xingxing, Lei Li, and Junliang Zhang. "Direct Aza-Darzens Aziridination ofN-Tosylimines with 2-Bromomalonates for the Synthesis of Highly Functionalized Donor-Acceptor Aziridines." Advanced Synthesis & Catalysis 354, no. 18 (2012): 3485–89. http://dx.doi.org/10.1002/adsc.201200628.

Full text
APA, Harvard, Vancouver, ISO, and other styles
48

Wu, Xingxing, Lei Li, and Junliang Zhang. "ChemInform Abstract: Direct Aza-Darzens Aziridination of N-Tosylimines with 2-Bromomalonates for the Synthesis of Highly Functionalized Donor-Acceptor Aziridines." ChemInform 44, no. 21 (2013): no. http://dx.doi.org/10.1002/chin.201321100.

Full text
APA, Harvard, Vancouver, ISO, and other styles
49

Kim, Doyoung, Min Woo Ha, Suckchang Hong та ін. "Enantioselective Synthesis of Chiral α-Azido and α-Aryloxy Quaternary Stereogenic Centers via the Phase-Transfer-Catalyzed α-Alkylation of α-Bromomalonates, Followed by SN2 Substitution". Journal of Organic Chemistry 82, № 9 (2017): 4936–43. http://dx.doi.org/10.1021/acs.joc.7b00324.

Full text
APA, Harvard, Vancouver, ISO, and other styles
50

Maity, Soumitra, Injamam Ul Hoque, Saradindu Debnath, and Rabindranath Lo. "A Chromatographic Relay Conjugated Photoredox Strategy: S, Se- Pharmacophore from Alkenes via Formal [2+2+1] Heteroannulation." Chemical Communications, 2024. http://dx.doi.org/10.1039/d4cc03527e.

Full text
Abstract:
A rapid strategy to 2-aminodihydrothiophenes and their seleno analogues is hereby reported. Three-component photoredox reaction amongst alkene, thio(seleno)cyanate, and bromomalonate is employed, generating a carbo-thio(seleno)cyanate intermediate which undergoes a domino...
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!