Reductive coupling of alkynes by oxobis (diethyldithiocarbamato) molybdenum (IV)–sodium borohydride

…, D Lloyd-Jones, GSK Kannangara, AT Baker

文献索引：Conn; Lloyd-Jones; Kannangara; Baker Journal of Organometallic Chemistry, 1999 , vol. 585, # 1 p. 134 - 140

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被引用次数: 2

摘要

The reductive coupling of terminal alkynes and the intramolecular cyclization of diynes by oxobis (diethyldithiocarbamato) molybdenum (IV) in the presence of sodium borohydride are reported. The reaction leads to a mixture of products resulting primarily from 'head to tail'coupling of the alkynes. 1, 7-Octadiyne undergoes cyclization to afford cycloheptene-3- ylidene in 45% yield. The product distribution appears to be controlled by steric factors ...