The TDE sulfenyl group as a protective group for amines
摘要:
Various primary and secondary amines were transformed into their 2,2,2-trifluoro-1,1-diphenylethane- (TDE-) sulfenamides 5 in high yields. Efficient methods for cleavage and properties of these new derivatives are also described.
Benzotriazol-1-yl-sulfonyl Azide for Diazotransfer and Preparation of Azidoacylbenzotriazoles
作者:Alan R. Katritzky、Mirna El Khatib、Oleg Bol’shakov、Levan Khelashvili、Peter J. Steel
DOI:10.1021/jo101296s
日期:2010.10.1
Benzotriazol-1-yl-sulfonyl azide, a new crystalline, stable, and easily available diazotransfer reagent provides N-(α-azidoacyl)benzotriazoles convenient for N-, O-, C- and S-acylations. The efficient syntheses of various amides, azido protected peptides, esters, ketones and thioesters is reported together with a wide range of azides (including α-azido acids from α- amino acids in partially aqueous conditions) and