Regiocontrol in the 1,3-dipolar cycloaddition reactions of mesoionic compounds with acetylenic dipolarophiles
作者:Brian P. Coppola、Mark C. Noe、Sam Shih-Kuang Hong
DOI:10.1016/s0040-4039(97)01761-9
日期:1997.10
The regioselectivity of 1,3-dipolarcycloadditionreactions between mesoionic compounds with singly-tethered substituents is examined. The results with propiolate dipolarophiles are compared with other singly and doubly-tethered examples according to a model using an asynchronous, concerted transition state. The isolation and reaction of a novel, nonaryl substituted mesoionic compound 7 is reported