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Journal articles on the topic 'Dipyrromethanes'

Author: Grafiati

Published: 4 September 2021

Last updated: 29 July 2025

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1

Laha, Joydev K., and Mandeep Kaur Hunjan. "K2S2O8 mediated synthesis of 5-aryldipyrromethanes and meso-substituted A4-tetraarylporphyrins." Journal of Porphyrins and Phthalocyanines 25, no. 07n08 (2021): 664–73. http://dx.doi.org/10.1142/s1088424621500619.

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The synthesis of dipyrromethanes from pyrrole and arylglyoxylic acids in the presence of K2S2O8at 90 [Formula: see text]C is reported affording dipyrromethanes in very good yields. Unlike an excess pyrrole traditionally used in dipyrromethane synthesis, the current method uses a stoichiometric amount of pyrrole avoiding any use of Brønsted or Lewis acid. A gram scale synthesis of 5-phenyldipyrromethane is also achieved demonstrating potential scale up of dipyrromethanes using this method feasible. Subsequently, dipyrromethanes were converted to A4-tetraarylporphyrins also in the presence of K2

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2

Melanson, Jennifer A., Deborah A. Smithen, T. Stanley Cameron, and Alison Thompson. "Microwave-assisted reduction of F-BODIPYs and dipyrrins to generate dipyrromethanes." Canadian Journal of Chemistry 92, no. 8 (2014): 688–94. http://dx.doi.org/10.1139/cjc-2013-0341.

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The reduction of BODIPYs and dipyrrins to dipyrromethanes, via a reaction involving ethylene glycol and sodium methoxide, is reported. When benzyl alcohol is used in place of ethylene glycol, the addition of 2,4-dinitrophenylhydrazine to the reaction mixture after microwave irradiation results in the production of 1-benzylidene-2-(2,4-dinitrophenyl)hydrazone, indicating concomitant production of aldehyde alongside the dipyrromethane.

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3

Ranjbari, Faride, Salar Hemmati, and Mohammad Reza Rashidi. "Synthesis of (E)-1,2-Bis[4-[di(1H-pyrrol-2-yl)methyl]phenyl]ethene as a New Bis(dipyrromethane) Building Block." Letters in Organic Chemistry 17, no. 10 (2020): 795–800. http://dx.doi.org/10.2174/1570178617666200207102604.

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Dipyrromethanes are useful intermediates in the synthesis of porphyrins and their analogs. In this paper, we report the synthesis of a new bis(dipyrromethane) {(E)-1,2-bis[4-[di(1H-pyrrol-2- yl)methyl]phenyl]ethene}, from (E)-4,4'-1,2-ethenediylbis(benzaldehyde), showing a long resonance chain with improved UV spectrometric properties. This product has high potential in the synthesis of new bis(porphyrins) or other related compounds.

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4

Taniguchi, Masahiko, Arumugham Balakumar, Dazhong Fan, Brian E. McDowell, and Jonathan S. Lindsey. "Imine-substituted dipyrromethanes in the synthesis of porphyrins bearing one or two meso substituents." Journal of Porphyrins and Phthalocyanines 09, no. 08 (2005): 554–74. http://dx.doi.org/10.1142/s1088424605000678.

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5,15-substituted porphyrins are valuable compounds in bioorganic and materials chemistry. A new synthesis has been developed that employs 1,9-diformylation of a dipyrromethane, conversion of the diformyldipyrromethane to the bis(imino) derivative, and reaction of the bis(imino)dipyrromethane + a dipyrromethane to give the zinc-porphyrin bearing trans-AB-substituents. 1,9-diformylation was achieved via Vilsmeier reaction. Imination was achieved by treatment of the 1,9-diformyldipyrromethane with excess amine under neat conditions at room temperature. The porphyrin-forming reaction was carried o

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5

BRÜCKNER, CHRISTIAN, JEFF J. POSAKONY, CLAIRE K. JOHNSON, ROSS W. BOYLE, BRIAN R. JAMES, and DAVID DOLPHIN. "Novel and Improved Syntheses of 5,15-Diphenylporphyrin and its Dipyrrolic Precursors." Journal of Porphyrins and Phthalocyanines 02, no. 06 (1998): 455–65. http://dx.doi.org/10.1002/(sici)1099-1409(199811/12)2:6<455::aid-jpp67>3.0.co;2-c.

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Optimized syntheses of 5,15-diphenylporphyrin (DPP, 1) and its dipyrrolic precursors are described. A novel procedure for the synthesis of dipyrromethane (2), prepared by hydrodesulfurization of the corresponding di-2-pyrrolylthione (8), is presented, as well as an improved method to isolate large quantities of 5-phenyldipyrromethane (4), prepared by the acid-catalysed condensation of pyrrole with benzaldehyde. These dipyrromethanes are key reagents in two high-yield (2+2)-type syntheses of DPP. 5-Phenyldipyrromethane was formylated to provide 1-formyl- (11) and 1,9-diformyl-5-phenyldipyrromet

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6

Zhao, Hongbin, Junxu Liao, Deliang Yang, et al. "Efficient Synthesis of Novel Porphyrin Dimers with Versatile Linkers via Bis(dipyrromethanes) in an Excellent Mixed-Solvent." Australian Journal of Chemistry 66, no. 8 (2013): 972. http://dx.doi.org/10.1071/ch12521.

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A general and efficient protocol has been developed to synthesise a series of novel porphyrin dimers with versatile aryl linkers via a simultaneous condensation-cyclisation-oxidation reaction of diverse bis(dipyrromethanes) with dipyrromethane-dicarbinol catalysed by indium(iii) chloride at room temperature in an efficient CH2Cl2 and CH3CN mixed-solvent. The reaction yields increased to 21–26 % based on liquid chromatography-mass spectrometry (LCMS) and isolated yields were 13–19 % due to the use of the proper mixed-solvent. This mild method is applicable to the preparation of linker-tunable p

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7

Singh, Kamaljit, and Amit Sharma. "An unprecedented regioselective lithiation of dipyrromethanes. Synthesis of meso-functionalized dipyrromethanes." Tetrahedron Letters 48, no. 2 (2007): 227–29. http://dx.doi.org/10.1016/j.tetlet.2006.11.056.

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8

Tram, Kha, Westen MacIntosh, and Hongbin Yan. "Synthesis of glycosyl dipyrromethanes." Tetrahedron Letters 50, no. 19 (2009): 2278–80. http://dx.doi.org/10.1016/j.tetlet.2009.03.002.

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9

Renić, Marija, Nikola Basarić, and Kata Mlinarić-Majerski. "Adamantane–dipyrromethanes: novel anion receptors." Tetrahedron Letters 48, no. 44 (2007): 7873–77. http://dx.doi.org/10.1016/j.tetlet.2007.08.122.

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10

Lopes, Susana M. M., Américo Lemos, and Teresa M. V. D. Pinho e Melo. "Reactivity of Dipyrromethanes towards Azoalkenes: Synthesis of Functionalized Dipyrromethanes, Calix[4]pyrroles, and Bilanes." European Journal of Organic Chemistry 2014, no. 31 (2014): 7039–48. http://dx.doi.org/10.1002/ejoc.201402944.

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11

Karunaratne, Veranja, and David Dolphin. "Oxidation of 2-methylpyrroles with perchlorinated iron(III) metalloporphyrin catalysts: a versatile synthesis of symmetric and asymmetric dipyrromethanes." Canadian Journal of Chemistry 76, no. 10 (1998): 1467–73. http://dx.doi.org/10.1139/v98-190.

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A variety of substituted 2-methylpyrroles (3-8) were oxidized using the metalloporphyrin catalysts iron(III) meso-tetra(2,6-dichloro-3-sulphonatophenyl)-β-octachloroporphyrin chloride 1 and iron(III) meso-tetra(2,6-dichlorophenyl)-β-octachloroporphyrin chloride 2 under very mild conditions. Treatment of the resulting allylic alcohols 3a-8a with α-free pyrroles 9 and 10 resulted in a very efficient synthesis of the corresponding dipyrromethanes 3b-8b and 3c-8c. Furthermore, the above allylic alcohols when treated with furfurylamine produced the novel (2-furylmethyl)-2-pyrrolylmethylamines 3d-8d

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12

Littler, Benjamin J., Mark A. Miller, Chen-Hsiung Hung, et al. "Refined Synthesis of 5-Substituted Dipyrromethanes." Journal of Organic Chemistry 64, no. 4 (1999): 1391–96. http://dx.doi.org/10.1021/jo982015+.

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13

Kuznetsova, P. L., V. E. Shambalova, A. S. Aldoshin, K. A. Lyssenko, and V. G. Nenajdenko. "Preparation of fluorinated 5,5′-dialkylsubstituted dipyrromethanes." Russian Chemical Bulletin 73, no. 12 (2024): 3601–11. https://doi.org/10.1007/s11172-024-4471-8.

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14

Boarini, Milena B., María E. Pérez, María E. Milanesio, and Edgardo N. Durantini. "Synthesis of Porphyrins with ABAB Symmetry from Dipyrromethanes as Potential Phototherapeutic Agents." Chemistry Proceedings 3, no. 1 (2020): 133. http://dx.doi.org/10.3390/ecsoc-24-08305.

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Asymmetrically meso-substituted porphyrins were synthesized with ABAB symmetry patterns. The approach required the formation of dipyrromethanes, which were obtained from the condensation of an aldehyde (pentafluorobenzaldehyde, 4-nitrobenzaldehyde or N,N-diphenylaminobenzaldehyde) with a large excess of pyrrole (1:47 aldehyde/pyrrole mol ratio), catalyzed by trifluoroacetic acid in 70–94% yields. Then, acid-catalyzed condensation of these dipyrromethanes with an aldehyde (N,N-dimethylaminobenzaldehyde, 4-carboxymethyl benzaldehyde or N-ethyl-3-carbazolecarbaldehyde) (1:1 mol ratio) in dichloro

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15

Rangaraj, Prasath, Srinivasulu Parshamoni, and Sanjit Konar. "MOF as a syringe pump for the controlled release of iodine catalyst in the synthesis of meso-thienyl dipyrromethanes." Chemical Communications 51, no. 85 (2015): 15526–29. http://dx.doi.org/10.1039/c5cc06311f.

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16

Tasior, Mariusz, Roman Voloshchuk, Yevgen M. Poronik, Tomasz Rowicki, and Daniel T. Gryko. "Corroles bearing diverse coumarin units — synthesis and optical properties." Journal of Porphyrins and Phthalocyanines 15, no. 09n10 (2011): 1011–23. http://dx.doi.org/10.1142/s1088424611003926.

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Two strategies were shown to be efficient in the construction of corroles with appended coumarin units. Direct condensation of formyl-coumarins with dipyrromethanes leads to a diverse range of trans-A2B-corroles in moderate yields. We showed that the strategy consisting of synthesis of various hydroxycoumarins followed by nucleophilic aromatic substitution with pentafluorobenzaldehyde and subsequent condensation of the resulting coumarin-aldehyde with dipyrromethanes is the most general methodology for the preparation of such dyads. The second, more demanding but also more efficient approach i

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17

Gryko, Daniel T., and Katarzyna E. Piechota. "Straightforward route to trans-A2B-corroles bearing substituents with basic nitrogen atoms." Journal of Porphyrins and Phthalocyanines 06, no. 02 (2002): 81–97. http://dx.doi.org/10.1142/s1088424602000129.

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We have developed a comprehensive methodology that affords regioisomerically pure trans- A 2 B -corroles bearing substituents with basic nitrogen atoms at meso positions. The corrole formation reaction involves the acid-catalyzed condensation of a dipyrromethane (DPM) and an aldehyde followed by oxidation with DDQ. The optimal conditions for this process were identified by extensive modifications of the previously developed conditions for the synthesis of trans-A2B-corroles with aromatic substituents. In particular three distinct sets of conditions were identified for various specific cases. P

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18

Pankhurst, James R., Thomas Cadenbach, Daniel Betz, Colin Finn, and Jason B. Love. "Towards dipyrrins: oxidation and metalation of acyclic and macrocyclic Schiff-base dipyrromethanes." Dalton Transactions 44, no. 5 (2015): 2066–70. http://dx.doi.org/10.1039/c4dt03592e.

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Oxidation of acyclic Schiff-base dipyrromethanes cleanly results in dipyrrins, whereas the macrocyclic ‘Pacman’ analogues either decompose or form new dinuclear copper(ii) complexes that are inert to ligand oxidation.

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19

Bagherzadeh, Mojtaba, Mohammad Adineh Jonaghani, Mojtaba Amini, and Anahita Mortazavi-Manesh. "Synthesis of dipyroromethanes in water and investigation of electronic and steric effects in efficiency of olefin epoxidation by sodium periodate catalyzed by manganese tetraaryl andtransdisubstituted porphyrin complexes." Journal of Porphyrins and Phthalocyanines 23, no. 06 (2019): 671–78. http://dx.doi.org/10.1142/s108842461950038x.

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Condensation of pyrrole with various aldehydes in the presence of BF3•etherate as an acid catalyst in water provides good yield of some dipyrromethanes. Prolongation of the reaction time with aldehydes substituted by electron-donating (mesityl) or electron-withdrawing (2,6-dichlorophenyl) groups on the ortho positions of the phenyl did not lead to decomposition or scrambling. Manganese trans disubstituted porphyrin complexes which derive from various dipyrromethanes and manganese tetraaryl porphyrin complexes including various substituents with different steric and electronic properties show g

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20

Wu, Zhenhao, Jianglei Hu, Kaikai Wang, Chao Gao, Hongyu Wang, and Long Zhang. "One-Step Synthesis of Dipyrromethanes in Water." Chinese Journal of Organic Chemistry 32, no. 03 (2012): 616. http://dx.doi.org/10.6023/cjoc1107011.

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21

Lyubimova, T. V., S. А. Syrbu та А. S. Semeikin. "Synthesis of Porphyrins from α-Unsubstituted Dipyrromethanes". Macroheterocycles 9, № 1 (2016): 59–64. http://dx.doi.org/10.6060/mhc150977s.

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22

Laha, Joydev K., Savithri Dhanalekshmi, Masahiko Taniguchi, Arounaguiry Ambroise, and Jonathan S. Lindsey. "A Scalable Synthesis of Meso-Substituted Dipyrromethanes." Organic Process Research & Development 7, no. 6 (2003): 799–812. http://dx.doi.org/10.1021/op034083q.

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23

Sobral, Abı́lio J. F. N., Nuno G. C. L. Rebanda, Melo da Silva, et al. "One-step synthesis of dipyrromethanes in water." Tetrahedron Letters 44, no. 20 (2003): 3971–73. http://dx.doi.org/10.1016/s0040-4039(03)00785-8.

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24

Lopes, Susana M. M., and Teresa M. V. D. Pinho e Melo. "Meso-Substituted Corroles from Nitrosoalkenes and Dipyrromethanes." Journal of Organic Chemistry 85, no. 5 (2020): 3328–35. http://dx.doi.org/10.1021/acs.joc.9b03151.

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25

Nascimento, Bruno F. O., Susana M. M. Lopes, Marta Pineiro, and Teresa M. V. D. Pinho e Melo. "Current Advances in the Synthesis of Valuable Dipyrromethane Scaffolds: Classic and New Methods." Molecules 24, no. 23 (2019): 4348. http://dx.doi.org/10.3390/molecules24234348.

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This review presents the most recent developments on the synthesis of dipyrromethanes, covering classical synthetic strategies, using acid catalyzed condensation of pyrroles and aldehydes or ketones, and recent breakthroughs which allow the synthesis of these type of heterocycles with new substitution patterns.

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26

Senapak, W., R. Saeeng, J. Jaratjaroonphong, T. Kasemsuk, and U. Sirion. "Green synthesis of dipyrromethanes in aqueous media catalyzed by SO3H-functionalized ionic liquid." Organic & Biomolecular Chemistry 14, no. 4 (2016): 1302–10. http://dx.doi.org/10.1039/c5ob01953b.

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A mild, efficient and metal-free method was described for the green synthesis of dipyrromethanes from aldehydes and unsubstituted pyrrole catalyzed by SO<sub>3</sub>H-functionalized ionic liquids (SO<sub>3</sub>H-ILs) in aqueous media at room temperature.

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27

Temelli, Baris, та Hilal Kalkan. "Synthesis and spectroscopic properties of β-meso directly linked porphyrin–corrole hybrid compounds". Beilstein Journal of Organic Chemistry 14 (22 січня 2018): 187–93. http://dx.doi.org/10.3762/bjoc.14.13.

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The preparation of β-meso directly linked porphyrin–corrole hybrids was realized for the first time via an InCl3-catalyzed condensation reaction of 2-formyl-5,10,15,20-tetraphenylporphyrins with meso-substituted dipyrromethanes. Hybrid compounds have been characterized by 1H NMR, 13C NMR, 2D NMR, UV–vis absorption and fluorescence spectroscopy.

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28

Deliomeroglu, Murat K., Vincent M. Lynch, and Jonathan L. Sessler. "Non-cyclic formylated dipyrromethanes as phosphate anion receptors." Chemical Science 7, no. 6 (2016): 3843–50. http://dx.doi.org/10.1039/c6sc00015k.

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29

Faugeras, Pierre-Antoine, Benjamin Boëns, Pierre-Henri Elchinger, Julien Vergnaud, Karine Teste, and Rachida Zerrouki. "Synthesis of meso-substituted dipyrromethanes using iodine-catalysis." Tetrahedron Letters 51, no. 35 (2010): 4630–32. http://dx.doi.org/10.1016/j.tetlet.2010.06.122.

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30

Gryko, Daniel T. "Adventures in the synthesis of meso-substituted corroles." Journal of Porphyrins and Phthalocyanines 12, no. 08 (2008): 906–17. http://dx.doi.org/10.1142/s1088424608000297.

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This personal account describes how methodology for the synthesis of meso-substituted corroles reached the mature state within just a few years. Both latest developments and many dead-end attempts are described. The comprehensive comparison of conditions of the reaction of aldehydes with dipyrromethanes leading to trans-A2B-corroles is presented.

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31

Shaikh, Kabeer A., Vishal A. Patil, and Azeem Ahmed. "A Novel Method for the Synthesis of Dipyrromethanes Under Solvent-Free Condition." E-Journal of Chemistry 9, no. 4 (2012): 1796–800. http://dx.doi.org/10.1155/2012/456923.

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This study describes a successful approach for the synthesis of dipyrromethanes using iodine as a catalyst on grinding. This protocol does not require any solvent and carried out at lowest pyrrole/aldehyde ratio which makes this method economically and environmentally attractive. This protocol affords the products immediately with excellent yield.

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32

Arumugam, Nagarajan, Dong-Hoon Won, and Chang-Hee Lee. "Syntheses of regioselectively functionalized, asymmetric porphyrins via “2+2” condensation." Journal of Porphyrins and Phthalocyanines 06, no. 07 (2002): 479–83. http://dx.doi.org/10.1142/s1088424602000592.

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Attachment of functional groups at the designated β-pyrrolic positions in asymmetrically substituted porphyrins is important in building customized model systems. We have developed a synthetic method of mono-functionalized dipyrromethanes at one of the β-pyrrolic positions. Synthesis of β-mono-brominated AB 2 C and ABCD type porphyrins was achieved by “2+2” condensation therefrom.

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33

Heinze, Katja, and Anja Reinhart. "A New Hydrogen-Bonding Motif with Constituents Bearing Donor and Acceptor Sites 7 Å Apart." Zeitschrift für Naturforschung B 60, no. 7 (2005): 758–62. http://dx.doi.org/10.1515/znb-2005-0710.

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Aryl substituted dipyrromethanes [di(pyrrol-2-yl)-phenyl-methanes] with hydrogen acceptor substituents R in para position of the aryl ring [R = CO2Me, CO2H, CONH(iPr) and NH2] located 7 Å apart from the hydrogen donor pyrrole nitrogen atom are shown to self-assemble in the solid state via hydrogen bonds to form rings or chains.

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34

Singhal, Anchal, Snigdha Singh, and Shive M. S. Chauhan. "Synthesis of dipyrromethanes in aqueous media using boric acid." Arkivoc 2016, no. 6 (2017): 144–51. http://dx.doi.org/10.24820/ark.5550190.p009.847.

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35

Singh, Kamaljit, Sonia Behal, and Prasant K. Deb. "Efficient and Versatile Single‐Pot Alternative Approach to Dipyrromethanes." Synthetic Communications 35, no. 7 (2005): 929–34. http://dx.doi.org/10.1081/scc-200051691.

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36

Pereira, Nelson A. M., and Teresa M. V. D. Pinho e Melo. "Recent Developments in the Synthesis of Dipyrromethanes. A Review." Organic Preparations and Procedures International 46, no. 3 (2014): 183–213. http://dx.doi.org/10.1080/00304948.2014.903140.

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37

Borbas, K., and Ruisheng Xiong. "Mild Microwave-Assisted Synthesis of Dipyrromethanes and Their Analogues." Synlett 26, no. 04 (2014): 484–88. http://dx.doi.org/10.1055/s-0034-1378925.

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38

Alešković, Marija, Nikola Basarić, Ivan Halasz, Xing Liang, Wenwu Qin, and Kata Mlinarić-Majerski. "Aryl substituted adamantane–dipyrromethanes: chromogenic and fluorescent anion sensors." Tetrahedron 69, no. 6 (2013): 1725–34. http://dx.doi.org/10.1016/j.tet.2012.12.026.

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39

Wijesekera, Tilak P. "5-Perfluoroalkyldipyrromethanes and porphyrins derived therefrom." Canadian Journal of Chemistry 74, no. 10 (1996): 1868–71. http://dx.doi.org/10.1139/v96-209.

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Acid-catalyzed condensation of pyrrole and perfluoroalkyl aldehydes produced, in a single step, α,β-unsubstituted 5-perfluoroalkyldipyrromethanes, which were isolated and characterized for the first time. These dipyrromethanes were used as the key intermediates in the synthesis of trans-perfluroalkylporphyrins as well as meso-tetrakis(perfluoroalkyl)porphyrins. The two-step procedure described here provides access to a wide variety of porphyrins with trans perfluoroalkyl groups. Key words: 5-perfluoroalkyldipyrromethanes, perfluoroalkylporphyrins, electron-deficient porphyrins.

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40

Bhaumik, Jayeeta, Zhen Yao, K. Eszter Borbas, Masahiko Taniguchi, and Jonathan S. Lindsey. "Masked Imidazolyl−Dipyrromethanes in the Synthesis of Imidazole-Substituted Porphyrins." Journal of Organic Chemistry 71, no. 23 (2006): 8807–17. http://dx.doi.org/10.1021/jo061461r.

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41

Cho, Won-Seob, and Chang-Hee Lee. "Customized, core-modified corroles from [2+2] condensation of dipyrromethanes." Tetrahedron Letters 41, no. 5 (2000): 697–701. http://dx.doi.org/10.1016/s0040-4039(99)02142-5.

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42

Chauhan, Shive Murat Singh, Tanuja Bisht, and Bhaskar Garg. "1-Arylazo-5,5-dimethyl dipyrromethanes: Versatile chromogenic probes for anions." Sensors and Actuators B: Chemical 141, no. 1 (2009): 116–23. http://dx.doi.org/10.1016/j.snb.2009.06.013.

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43

Faugeras, Pierre-Antoine, Benjamin Boens, Pierre-Henri Elchinger, Julien Vergnaud, Karine Teste, and Rachida Zerrouki. "ChemInform Abstract: Synthesis of meso-Substituted Dipyrromethanes Using Iodine-Catalysis." ChemInform 41, no. 51 (2010): no. http://dx.doi.org/10.1002/chin.201051101.

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44

Trestsova, Maria A., Irina A. Utepova, Oleg N. Chupakhin, et al. "Oxidative C-H/C-H Coupling of Dipyrromethanes with Azines by TiO2-Based Photocatalytic System. Synthesis of New BODIPY Dyes and Their Photophysical and Electrochemical Properties." Molecules 26, no. 18 (2021): 5549. http://dx.doi.org/10.3390/molecules26185549.

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Oxidative C-H/C-H coupling reactions of dipyrromethanes with azines in the presence of a heterophase oxidative photocatalytic system (O2/TiO2/visible light irradiation) were carried out. As a result of cyclization of obtained compounds with boron trifluoride etherate, new hetaryl-containing derivatives of 4,4-difluoro-4-boron-3a,4a-diaza-s-indacene were synthesized. For the obtained compounds, absorption and luminescence spectra, quantum yields of luminescence as well as cyclic volt-amperograms were measured.

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45

M. Smith, Kevin, David A. Lee, and Jean M. Brisson. "Syntheses of Regiospecifically Meso Functionalized Dipyrromethanes, Porphyrins, and Diphenylethane-linked Bisporphyrins." HETEROCYCLES 40, no. 1 (1995): 131. http://dx.doi.org/10.3987/com-94-s32.

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46

Julliard, Paul-Gabriel, Simon Pascal, Olivier Siri, Diego Cortés-Arriagada, Luis Sanhueza, and Gabriel Canard. "Functionalized porphyrins from meso-poly-halogeno-alkyl-dipyrromethanes: synthesis and characterization." Comptes Rendus. Chimie 24, S3 (2021): 1–19. http://dx.doi.org/10.5802/crchim.97.

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47

Alvi, Shakeel, and Rashid Ali. "Novel truxene-based dipyrromethanes (DPMs): synthesis, spectroscopic characterization and photophysical properties." Beilstein Journal of Organic Chemistry 20 (August 29, 2024): 2163–70. http://dx.doi.org/10.3762/bjoc.20.186.

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For the first time, herein, we report the synthetic part of the truxene-centred mono-, di- and tri-substituted dipyromethanes (DPMs) in good yields (60–80%) along with their preliminary photophysical (absorption, emission and time resolved fluorescence lifetime) properties. The condensation reaction for assembling the required DPMs were catalyzed with trifluoroacetic acid (TFA) at 0 °C to room temperature (rt), and the stable dipyrromethanes were purified through silica-gel column chromatography. After successfully synthesizing these easy-to-make yet interesting molecules, they were fully char

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Beyzavi, M. Hassan, Carolin Nietzold, Hans-Ulrich Reissig, and Arno Wiehe. "Synthesis of Functionalizedtrans-A2B2-Porphyrins Using Donor-Acceptor Cyclopropane-Derived Dipyrromethanes." Advanced Synthesis & Catalysis 355, no. 7 (2013): 1409–22. http://dx.doi.org/10.1002/adsc.201300141.

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Zoli, Luca, and Pier Giorgio Cozzi. "Electrophilic Activation of Aldehydes “On Water”: A Facile Route to Dipyrromethanes." ChemSusChem 2, no. 3 (2009): 218–20. http://dx.doi.org/10.1002/cssc.200900023.

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OH, K. T., J. W. KA, J. Y. PARK, and C. H. LEE. "ChemInform Abstract: Convenient Synthesis of Dipyrromethanes Containing Heteroatoms Other than Nitrogen." ChemInform 28, no. 34 (2010): no. http://dx.doi.org/10.1002/chin.199734126.

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