An alternative CuCl–piperidine??catalyzed oxidative homocoupling of terminal alkynes affording 1, 3??diynes in air

Q Zheng, R Hua, Y Wan

Index: Zheng, Qingwei; Hua, Ruimao; Wan, Youzhi Applied Organometallic Chemistry, 2010 , vol. 24, # 4 p. 314 - 316

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Citation Number: 52

Abstract

Recently, the use of Cu(I)/(II) salts and complexes as catalysts in organic synthesis has received increased attention due to their easy availability, non-toxicity, ease of handling and low cost.20–29 Although it has been known for decades that CuBr NH 3 (Glaser coupling)30 and CuCl·TMEDA (TMEDA = N,N,N′,N′-tetramethylethylenediamine, Hay coupling31) could be used as a catalyst for the oxidative homocoupling of terminal alkynes in an atmosphere of ...