An Experimental and Theoretical Study on the Remarkable Influence of Protecting Groups on the Selectivity of Addition of Amines to Vinyl Sulfone-Modified Hex-2-enopyranosides
作者:Rahul Bhattacharya、Manoj K. Kesharwani、Chinmoy Manna、Bishwajit Ganguly、Cheravakattu G. Suresh、Tanmaya Pathak
DOI:10.1021/jo902046g
日期:2010.1.15
calculations suggest that the Michael addition of amines and proton transfer to vinyl sulfone-modified carbohydrates 2α and 5α are possible via relay process in a concerted mechanism. These calculations reveal that the addition of primary amines to vinyl sulfone-modified carbohydrate is preferential due to the low activation energy barriers, whereas the addition of secondary amines has relatively higher activation