作者:E. Taskinen、V-M Mukkala
DOI:10.1016/0040-4020(82)80201-9
日期:1982.1
Chemical equilibration studies on isomeric β-methoxy-substituted α,β and β,γ-unsaturated ketones and the corresponding carboxylic esters have been carried out. The α,β-isomers are highly favored at equilibrium if the MeO and keto (or ester) groups are trans disposed across the CC bond and if these groups are unhindered by steric factors to conjugate with the olefinic bond. In acylic ketones and esters
已经对异构的β-甲氧基取代的α,β和β,γ-不饱和酮和相应的羧酸酯进行了化学平衡研究。的α,β型异构体均在平衡高度青睐如果的MeO和酮(或酯)基团是反式跨CC键布置的,并且如果这些基团是由位阻因素不受阻碍地向缀合物与烯键。如果本质上大于氢的取代基同时结合在C-α和C-β上,则在酰基酮和酯中不满足后一种条件。