期刊
CHEMICAL COMMUNICATIONS
卷 48, 期 42, 页码 5175-5177出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2cc30746d
关键词
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A stereoselective [3 + 2] cycloaddition of isocyanoesters to methyleneindolinones catalyzed by a quinine-based thioureatertiary amine has been successfully developed. Just by tuning the protecting groups on substrates, a variety of optically enriched 3,3'-pyrrolidinyl spirooxindole diastereomers could be obtained in excellent enantioselectivities (up to 99% ee).
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