172477-26-8Relevant articles and documents
Reactions of Complex Ligands, LXVI. Diastereomerically Pure 2-Ethynylcyclopropanecarboxylic Acid Derivatives and (2-Ethynylcyclopropyl)methoxycarbene Complexes of Chromium and Tungsten
Kretschik, Oliver,Nieger, Martin,Doetz, Karl Heinz
, p. 987 - 990 (2007/10/03)
Ethynylcyclopropanecarboxylic acid esters 2c/2t were prepared from phenylbutenyne 1 and ethyl diazoacetate.Pure diastereomers were obtained by chromatography and converted into the corresponding acyl chlorides 4c/4t.Reaction with K2 (M = Cr, W) af