A simple synthesis of unsymmetrical buta-1,3-diynes by cross-coupling of terminalalkynes with 1-bromoalkynes in the presence of copper(I) iodide and tris(o-tolyl)phosphine was developed that gives good yields under simple and mild reaction conditions. The scope and limitations of the cross-coupling reaction were investigated. alkynes - catalysis - cross-coupling - alkadiynes
Interaction between an oxygen and an alkynyl-carbon atom in 1-(2-nitrophenyl)-4-phenylbutadiyne
作者:H. S. Bengaard、S. Larsen、H. O. Sørensen、K. J. Robinson、J. D. Wallis
DOI:10.1107/s0108270198010853
日期:1999.1.15
The title compound, C16H9NO2, Studied at 122 K shows a short 1,5 interaction between a nitro-O atom and an alkynyl-C atom. The atomic separation is 2.636(2)Angstrom, and the dialkyne group is bent from linearity at this C atom only.