Efficient Pd-catalyzed coupling of tautomerizable heterocycles with terminal alkynes via C-OH bond activation using PyBrOP.
Efficient Pd-catalyzed coupling of tautomerizable heterocycles with terminal alkynes via C-OH bond activation using PyBrOP.
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DOI:
10.1021/ol100657n
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发表时间:
2010-05-21
期刊:
影响因子:
5.2
通讯作者:
Aldrich, Courtney C.
中科院分区:
文献类型:
--
作者:
Shi, Ce;Aldrich, Courtney C.
The direct alkynylation of tautomerizable heterocylcles is described via a two-step process involving in situ C-OH activation with bromotripyrrolidinophosphonium hexafluorophosphate (PyBrOP) followed by Sonogashira coupling with a wide range of alkyl or aryl terminal alkynes using a copper free system employing PdCl2(CH3CN)2 and 2-(dicyclohexylphosphino)biphenyl.
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