期刊
ORGANIC CHEMISTRY FRONTIERS
卷 5, 期 13, 页码 2126-2131出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8qo00370j
关键词
-
资金
- National Natural Science Foundation of China [21432006, 21772127]
Highly efficient asymmetric [3 + 2] cycloaddition reactions of thiazolium salts with a variety of electron-deficient 2- components were achieved by chiral N,N-dioxide/metal complex catalysts, providing a convenient route to access enantioenriched hydropyrrolo-thiazoles. The oxathiazine and sulfinate could be readily obtained by the oxidation of the hydropyrrolo-thiazole. Moreover, through ingenious collaboration of chiral catalysts with basic additives, the first cascade cycloaddition/rearrangement reaction with ,-unsaturated -ketoesters was realized, and various pyrrolo-[1,4]thiazine derivatives were afforded in excellent results.
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