Cremlyn, Richard J.; Swinbourne, Frederick J.; Graham, Stephen, Phosphorus, Sulfur and Silicon and the Related Elements, 1991, vol. 60, # 1.2, p. 57 - 65
Cremlyn, Richard J.; Swinbourne, Frederick J.; Graham, Stephen, Phosphorus, Sulfur and Silicon and the Related Elements, 1991, vol. 60, # 1.2, p. 57 - 65
A Comparative Study on Some Diaryl Azines Amino Acid Derivatives
作者:Ragab A. El-Sayed
DOI:10.1080/10426500601142155
日期:2007.3.15
Benzaldehydeazines, p-anisaldehydeazines, and thiophene-2-carboxaldehyde azines react with excess chlorosulfonic acid to give corresponding disulfonyl chlorides 1,13, and 24. These were condensed with nucleophiles to give disulfonyl amino acid derivatives, 2-4, 14-16, and 25-27. Some of the corresponding methyl esters were prepared: 5-6, 17-18, and 28-29. Hydrazinolysis of these methyl esters yielded hydrazides 7-8, 19-20, and 30-31. Coupling reactions of some amino acid derivatives, in THF-Et8N medium using the dicyclohexylcarbodiimide method DCC, furnished dipeptide methyl esters 9-12, 21-23, and 32-34. Attemped chlorosulfonation of furan-2-carboxaldehyde azine were unsuccessful. Some spectra data are briefly discussed.