期刊
CHEMICAL COMMUNICATIONS
卷 51, 期 24, 页码 5013-5016出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4cc10438b
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资金
- DST, New Delhi
- UGC
- CSIR
An efficient metal free self-sorting tandem protocol for stereospecific synthesis of 2-thio-1,4-enediones involving C-C double bond formation via direct coupling of terminal alkynes has been developed. The method was also extended to the first synthesis of beta-thio-gamma-keto-alpha,beta-unsaturated esters via a cross coupling reaction with ethyl glyoxylate. The reaction relies on a first of its kind use of Bronsted and Lewis acids to switch selectivity for the synthesis of an E or a Z-isomer respectively.
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