The reactions of trifluoromethyl and trichloromethyl radicals with conjugated and methylene-interrupted dienes and enynes
作者:El Soueni、John M. Tedder、John C. Walton
DOI:10.1016/s0022-1139(00)85250-1
日期:1981.1
In gas phase reactions only products derived from hydrogen abstraction were detected in the CF3I/penta-1,3-diene system, but the 1,4-adducts again predominated in the liquid phase. CCl3Br similarly gave a mixture of 1,2- and 1,4-adducts, the latter predominating, on photochemical reaction with penta-1,3-diene. The 1,2-adduct was the main product from the CCl3Br/pent-1-en-4-yn reaction, but some hydrogen
在气相中将CF 3 I光化学添加至丁-1,3-二烯和乙烯基乙炔中得到1,4-加合物作为主要产物。在气相反应中,仅在CF 3 I /五-1,3-二烯体系中检测到了来自氢提取的产物,但1,4加合物在液相中仍占主导地位。CCl 3 Br类似地得到1,2-和1,4-加合物的混合物,后者在与五-1,3-二烯的光化学反应中占主导地位。1,2-加合物是CCl 3 Br / pent-1-en-4-yn反应的主要产物,但观察到一些氢的夺取。共轭二烯显示出在构型中提供1,4-加合物的偏好是根据空间因素和二烯采用该构型的倾向来解释的-构象。