An Iodocyclization Approach to Substituted 3-Iodothiophenes
作者:Bartolo Gabriele、Raffaella Mancuso、Giuseppe Salerno、Richard C. Larock
DOI:10.1021/jo301001j
日期:2012.9.7
A novel approach to 3-iodothiophenes by direct iodocyclization of alkynylthiol derivatives is presented. A variety of 1-mercapto-3-yn-2-ols 5 (readily available from alkynylation of the corresponding alpha-mercapto ketones or alpha-mercapto esters) were smoothly converted into the corresponding 3-iodothiophene derivatives 6 in good yields by reaction with molecular iodine in the presence of NaHCO3 at room temperature in MeCN as the solvent.