<i>Tilcotil</i><sup>®</sup>Studies [3+2] additions with isothiazol-3(2<i>H</i>)-one 1,1-dioxide
作者:Kaspar F. Burri
DOI:10.1002/hlca.19890720630
日期:1989.9.20
Derivatives of isothiazol-3(2H)-one 1,1-dioxide react regiospecifically with 1,3-dipolar agents. The main regiocontrolling factor is ascertained to be the CO group of the dipolarophile. The topology of the adducts is also in general agreement with predictions based on perturbation theory. Several adducts can be aromatized to heterocyclic equivalents of saccharin, and may then be elaborated into structural