Facile synthesis of disubstituted and spiro five-membered benzosultams mediated by TMSCl–NaI–MeCN reagent
作者:Zhaopeng Liu、Norio Shibata、Yoshio Takeuchi
DOI:10.1039/b109832b
日期:2002.1.23
o-Lithiation of N-tert-butylbenzenesulfonamide followed by reaction with ketones gave carbinol sulfonamides, which underwent TMSClâNaIâMeCN reagent mediated cyclization to afford 3,3-disubstituted and spiro-2,3-dihydrobenzo[d]isothiazole-1,1-diones in high yields.
N-叔丁基苯磺酰胺的邻锂化,然后与酮反应,得到甲醇磺酰胺,其经过 TMSCl·NaI·MeCN 试剂介导的环化,得到 3,3-二取代和螺-2,3-二氢苯并[d]异噻唑- 1,1-二酮产量高。