DMAPTsCl+ (-) : A Promising Versatile Regioselective Tosyl Transfer Reagent

摘要

abstract_textpRegioselective monotosylation, for the first time on 2,4-syn 2,4-anti configured ene-tetrols and on diols triols was achieved in excellent yields and selectivity by employing DMAPTsCl+ (-,) 1. We also proposed and developed operational flexible preferential regio-complimentary tosylation of cis-1,2-diol moiety of pyranosides by employing 1. Further NMR correlation for unambiguous structure determination of regioselectivity and also preferred conformations of these pyranosides were established./p/abstract_text