prepared from styrene and α-methylstyrene with thallium(III) acetate and isobutyrate in various alcohols. I(R1=H) reacts with copper(I) iodide, bromide, chloride, cyanide and thiocyanate to afford the corresponding alkyl halides and pseudohalides, C6H5CH(OR3)CH2X [II], in various organic solvents, acetonitrile being the solvent of choice for the purpose of preparing II. The addition of potassium salt
一些新的烯烃烷氧基铊(III)化合物,C6H5C(R1)(OR3)CH2Tl(OCOR2)2 [I],是由苯乙烯和α-甲基苯乙烯与乙酸铊(III)和异丁酸在各种醇中制备的。I(R1=H) 与碘化铜、溴化铜、氯化铜、氰化物和硫氰酸铜反应生成相应的烷基卤化物和拟卤化物,C6H5CH(OR3)CH2X[II],在各种有机溶剂中,乙腈是首选溶剂为了准备II。钾盐的加入对提高Ⅱ的收率有显着效果。卤代和假卤代脱卤发生在铊先前与烷基碳相连的位置。提出了一种离子协调的分子间方案作为制备 II 的反应机制。简要讨论了 I 的核磁共振和红外光谱数据。
Gaiffe,A.; Jambon,D., Comptes Rendus des Seances de l'Academie des Sciences, Serie C: Sciences Chimiques, 1971, vol. 273, p. 473 - 474
作者:Gaiffe,A.、Jambon,D.
DOI:——
日期:——
Synthesis of hindered functionalized ethers via high-pressure addition of alcohols to acrylic compounds
作者:Gérard Jenner
DOI:10.1016/s0040-4039(01)00872-3
日期:2001.7
or β-Substituted acrylic compounds react sluggishly or not at all. In this case, high-pressure activation can remove steric inhibition leading to good yields of the corresponding ethers. Reactions involving crotonic compounds (hindered β reaction center) show higher pressure dependence than the corresponding additions of alcohols to methacrylic analogs (free β reaction center). This is in agreement