ADDITION OF 5-MEMBERED AROMATIC HETEROCYCLIC COMPOUNDS TO ACETYLENES CATALYZED BY TETRARHODIUM DODECACARBONYL: SYNTHESES OF VINYL SUBSTITUTED AROMATIC HETEROCYCLIC COMPOUNDS
作者:Pangbu Hong、Bo-Re Cho、Hiroshi Yamazaki
DOI:10.1246/cl.1980.507
日期:1980.5.5
In the presence of a catalytic amount of Rh4(CO)12 furan adds to diphenylacetylene (1a) to give 1-(2-furyl)-1,2-diphenylethylene in a 80% yield. Similarly, from 2-substituted furans are obtained the adducts (3e–3h), in which the furyls attach to the olefin at the 5-position of the rings, in good yields. Thiophene and N-methylpyrrole also react with 1a to afford the corresponding ethylenes.
在催化量的 Rh4(CO)12
呋喃存在下加入二
苯乙炔 (1a) 中,以 80% 的产率得到 1-(2-
呋喃基)-1,2-
二苯乙烯。类似地,从 2-取代
呋喃得到加合物 (3e-3h),其中
呋喃基以良好的产率连接到环的 5 位的烯烃上。
噻吩和
N-甲基吡咯也与 1a 反应得到相应的
乙烯。