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2005
Polyphenylalkyne derivatives
Q 0750
The Effects of Amines on Oxidative Homo-Coupling of Terminal Alkynes Promotby Copper Salts. — The effect of various amines and copper salts on the Glaser
36- 079 ed
coupling reaction is studied. Thus, diethylamine can serve as an excellent solvent, base
and coordination ligand in the oxidative homo-coupling of terminal alkynes. Based on
these results the Sonogashira coupling reaction of terminal alkynes (I) and aryl halides
(V) is carried out under solvent control. The unwanted homo-coupling can be diminished by using triethylamine as reaction medium and the cross-coupling products (VI)
are preferred. — (WANG*, L.; YAN, J.; LI, P.; WANG, M.; SU, C.; J. Chem. Res.
2005, 2, 112-115; Dep. Chem., Huaibei Teacher's Coll., Huaibei 235000, Anhui, Peop.
Rep. China; Eng.) — H. Haber
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