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Relevant bibliographies by topics / Methyl chloroformate

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Journal articles

Academic literature on the topic 'Methyl chloroformate'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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Journal articles on the topic "Methyl chloroformate"

1

Andraos, John. "A green metrics assessment of phosgene and phosgene-free syntheses of industrially important commodity chemicals." Pure and Applied Chemistry 84, no. 3 (2011): 827–60. http://dx.doi.org/10.1351/pac-con-11-06-12.

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Synthesis plans for the following important industrial commodity chemicals using phosgene and phosgene-free chemistries have been analyzed and compared by green metrics to determine the most material-efficient routes so far developed (number of plans given in parentheses): dimethyl carbonate (DMC) (31), diphenyl carbonate (DPC) (40), diphenylurea (DPU) (23), methyl carbamate (MC) (8), methyl chloroformate (MCF) (6), methyl N-phenylcarbamate (MNPC) (25), methyl phenyl carbonate (MPC) (32), phenyl isocyanate (PI) (19), phenyl chloroformate (PCF) (10), and urea (13). Implications of these results

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2

Jadhav, Vinod H., Shubhada S. Deshpande, Hanumant B. Borate, and Radhika D. Wakharkar. "Microwave Promoted Solvent-free One-pot Synthesis of N,N′-disubstituted Urea Derivatives." Journal of Chemical Research 2005, no. 3 (2005): 205–8. http://dx.doi.org/10.3184/0308234054213753.

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An efficient one-pot synthesis of N,N′-disubstituted urea derivatives from substituted anilines, ethyl chloroformate and methyl anthranilate or methyl 3-amino-2-butenoate under microwave irradiation is reported.

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3

Patroni, JJ, and RV Stick. "The Treatment of Some Cyclic Thiocarbonates With Methyl Halide/Propylene Oxide." Australian Journal of Chemistry 40, no. 5 (1987): 795. http://dx.doi.org/10.1071/ch9870795.

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Treatment of thiocarbonates (OCSO) with methyl iodidelpropylene oxide at 80� can lead smoothly to the carbonate. In some cases, a competing process is the formation of iodo thiocarbonates ( OCOSMe ), and an explanation is provided for the product distributions observed. The corresponding reactions with methyl bromide and methyl chloride (as methyl chloroformate ) are much less efficient.

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4

Turhanen, Petri A., Janne Weisell, and Jouko J. Vepsäläinen. "Preparation of mixed trialkyl alkylcarbonate derivatives of etidronic acid via an unusual route." Beilstein Journal of Organic Chemistry 8 (November 20, 2012): 2019–24. http://dx.doi.org/10.3762/bjoc.8.228.

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A method to prepare four (3a–d) trialkyl alkylcarbonate esters of etidronate from P,P'-dimethyl etidronate and alkyl chloroformate was developed by utilizing unexpected demethylation and decarboxylation reactions. The reaction with the sterically more hindered isobutyl chloroformate at a lower temperature (90 °C) produced the P,P'-diester (2) as a stable intermediate product. A possible reaction mechanism is discussed to explain these methyl substitutions. These unusual reactions also clarify why it is difficult to prepare alkylcarbonate prodrugs from bisphosphonates. The compounds prepared we

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5

Wang, Bing-Tao, Hua-Dong Yue, Shu-Ping Luo, Li-Ping Wang, and Dan-Qian Xu. "Diphenyl-5,6,7,7a-tetrahydropyrrolo[1,2-c]oxazol-3(1H)-one." Acta Crystallographica Section E Structure Reports Online 63, no. 3 (2007): o1108—o1109. http://dx.doi.org/10.1107/s1600536807004394.

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The title compound, C18H17NO2, synthesized from enantiomerically pure L-proline, methyl chloroformate and a Grignard reagent, crystallizes with two molecules in the asymmetric unit. A chair conformation is adopted by the two fused five-membered rings.

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6

Kevill, Dennis N., Jong Chul Kim, and Jin Burm Kyong. "Correlation of the Rates of Solvolysis of Methyl Chloroformate with Solvent Properties." Journal of Chemical Research 23, no. 2 (1999): 150–51. http://dx.doi.org/10.1177/174751989902300242.

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The specific rates of solvolyis of methyl chloroformate are very well correlated by the extended Grunwald–Winstein equation over a wide range of solvents; the pathway is believed to be predominantly addition–elimination, except that a positive deviation for solvolysis in 90% 1,1,1,3,3,3-hexafluoropropan-2-ol suggests an 80% contribution from an ionisation mechanism.

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7

Groner, P., C. L. Tolley, and J. R. Durig. "A microwave and ab initio structure determination of methyl chloroformate." Chemical Physics 142, no. 3 (1990): 381–94. http://dx.doi.org/10.1016/0301-0104(90)80033-t.

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8

Zeng, Xiao-Qing, Mao-Fa Ge, Lin Du, Zheng Sun, and Dian-Xun Wang. "Experimental and theoretical study of the electronic structure of methyl chloroformate and methyl cyanoformate." Journal of Molecular Structure 800, no. 1-3 (2006): 62–68. http://dx.doi.org/10.1016/j.molstruc.2006.03.080.

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9

Thavaneswaran, Shanti, Kristy McCamley, and Peter J. Scammells. "N-Demethylation of Alkaloids." Natural Product Communications 1, no. 10 (2006): 1934578X0600101. http://dx.doi.org/10.1177/1934578x0600101008.

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The removal of an N-methyl group, or N-demethylation, is a useful chemical transformation in organic synthesis which has particular importance in the field of alkaloid chemistry. Historically, tertiary N-methyl alkaloids have been N-demethylated using the same methods as for N-dealkylating tertiary amines. Such methodologies have included the von Braun reaction, the use of chloroformate and azodicarboxylate reagents and the Polonovski reaction, amongst others. Photochemical and biochemical procedures have also been successfully employed. This review will examine these N-demethylation procedure

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10

Chen, Francis M. F., and N. Leo Benoiton. "N,N-Dialkoxycarbonylamino acid formation from a mixed anhydride through intramolecular urethane acylation." Canadian Journal of Chemistry 65, no. 6 (1987): 1228–29. http://dx.doi.org/10.1139/v87-207.

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Methoxycarbonylation at the urethane nitrogen of N-benzyloxycarbonyl- and N-methoxycarbonylvaline has been identified as a side reaction accompanying the aminolysis of the mixed anhydride formed from the acid and methyl chloroformate when the anhydride is coupled in aqueous dimethylformamide and the nucleophile is an amino acid anion. The side reaction occurs to a lesser but still significant extent when the activated residue is leucyl.

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