CDI-mediated monoacylation of symmetrical diamines and selective acylation of primary amines of unsymmetrical diamines
作者:Sanjeev K. Verma、Ramarao Ghorpade、Ajay Pratap、M. P. Kaushik
DOI:10.1039/c1gc16314k
日期:——
A highly efficient and green protocol for monoacylation of symmetricaldiamines and chemoselective acylation of primary amines of unsymmetrical diamines has been developed.
Reactions of trivalent phosphorus compounds with azides containing a mobile H-atom
作者:Yu.G. Gololobov、N.I. Gusar'、M.P. Chaus
DOI:10.1016/s0040-4020(01)96459-2
日期:1985.1
Investigation of the reactions of α-azidocarboxylic acids, N-(2-azidoethyl) amides and N-(2-azidoethyl) amines with trivalent P compounds shows that the intramolecular cyclization to spirophosphoranes of the intermediate phosphazo-compounds is typical of the azides of the first and third types but not of the second type. It is concluded that such cyclization is possible only where the functional group