Mecanisme et stereochimie de la reaction conduisant auxesters de chloromethyl-1 trichlorotelluranyl-2ethyle。应用 a la 合成 de l'epoxyde du titre a partir du benzoate demethyl-1allyle
Eu(dpm)3 [dpm: dipivaloylmethanate] catalyzes the ring-opening reaction of epoxides with acylhalides affording the corresponding 2-haloalkyl esters. The stereochemical course was confirmed as trans-addition in the case of the reaction of cyclohexene oxide.
A New Synthetic Method for Haloalkyl Carboxylic Esters from the Radical Ring Cleavage of Cyclic Acetals with Haloform
作者:Lin Hai-xia、Xu Liang-heng、Huang Nai-ju
DOI:10.1080/00397919708005032
日期:1997.1
Abstract A one-pot reaction of cyclicacetals with haloform catalyzed by AIBN(2,2′-azobisisobutyronitrile) provides a novel convenient way to prepare directly haloalkyl carboxylic esters in good yields.
Reaction of 1,3-dioxolans with iodine monochloride: the scope and mechanism of formation of 1,3-dioxolan-2-ylium dichloroiodates(I)
作者:Andr� Goosen、Cedric W. McCleland
DOI:10.1039/p19810000977
日期:——
salts, crystalline products could not be isolated from 4,5-disubstituted dioxolans. The reaction was inhibited by electron-withdrawing 4- and 5-substituents. From a study of the effects of photolysis and added iodine, the mechanism is proposed to involve a hydride ion transfer. Possible reasons for the formation of dichloroiodate(I) rather than monohalide salts, are outlined. The stability of the 2-aryl-substituted
Regioselective ring cleavage of oxiranes catalyzed by organotin halide - triphenylphosphine complex
作者:Ikuya Shibata、Akio Baba、Haruo Matsuda
DOI:10.1016/s0040-4039(00)84706-1
日期:1986.1
Vicinal chloroesters are formed in high yield from the reaction of oxiranes and benzoylchloride in the presence of organotin halide - triphenylphosphine complex with enhanced regioselectivity in oxirane ring cleavage.