Cs(2)CO(3)-promoted defluorination and functionalization of α-CF(3) carbonyl compounds in the presence of N-, O-, and/or S-nucleophiles.

Cs(2)CO(3)-promoted defluorination and functionalization of α-CF(3) carbonyl compounds in the presence of N-, O-, and/or S-nucleophiles.
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在 N-、O- 和/或 S-亲核试剂存在下,Cs2CO3 促进 α-CF3 羰基化合物的脱氟和官能化

DOI:
10.1039/c8ra02353k
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发表时间:
2018-04-27
期刊:
影响因子:
3.9
通讯作者:
Lei, Xinsheng
Lei, Xinsheng
中科院分区:
化学3区
文献类型:
--
作者:
Wu, Yue;Zhang, Bingbing;Zheng, Yinying;Wang, Yuheng;Lei, Xinsheng

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发展了一种简单、高效、温和的3,3,3-三氟羰基化合物的脱杂和功能化方法。在本方法中,Cs2 CO 3可以在N-、O-和S-亲核试剂的存在下容易地将α-三氟甲基酯、酰胺和酮转化为β,β-S-、O-和/或N-取代的α,β-不饱和羰基化合物,产率中等至优异,并且,与α-三氟甲基酯和一系列2-氨基苯酚的这种转化可以以良好的产率产生苯并恶唑。Cs_2CO_3促进的α-CF_3羰基化合物的脱羧和功能化。
A simple, efficient, and mild method for defluorination and functionalization of 3,3,3-trifluoro carbonyl compounds has been developed. In the present method, Cs2CO3 can easily convert α-trifluoromethyl esters, amides, and ketones into β,β-S-, O- and/or N-substituted α,β-unsaturated carbonyl compounds in the presence of N-, O-, and S-nucleophiles with moderate to excellent yields, and furthermore, this transformation with α-trifluoromethyl ester and a series of 2-aminophenols can result in benzooxazoles in good yields. Cs2CO3-promoted defluorination and functionalization of α-CF3 carbonyl compounds.
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