ALANINE, ALEX I. D.;FISHWICK, COLIN W. G.;JONES, ANDREW D.;MITCHELL, MICH+, TETRAHEDRON LETT., 30,(1989) N1, C. 5653-5654
作者:ALANINE, ALEX I. D.、FISHWICK, COLIN W. G.、JONES, ANDREW D.、MITCHELL, MICH+
DOI:——
日期:——
Preparation of methyl-2-(ω-iodoalkyl)propenoates and a facile route to 2-carbomethoxy-1,3-butadiene
作者:Alex I.D. Alanine、Colin W.G. Fishwick、Andrew D. Jones、Michael B. Mitchell
DOI:10.1016/s0040-4039(01)93823-7
日期:1989.1
α-Methylene-γ-andδ-lactones undergo facile ring opening with trimethylsilyl iodide to yield 2-(iodoethyl)propenoic acid and 2-(iodopropyl)propenoic acid respectively, which are methylated to afford the corresponding esters. Treatment of methyl-2-(iodoethyl)propenoate with base generates 2-carbomethoxy-1,3-butadiene which undergoes dimerisation or can be trapped in-situ.