A convenient one-step procedure for the synthesis of ketene O,S- and ketene S,S-acetals via thioacylation of malononitrile
作者:N.H. Nilsson
DOI:10.1016/s0040-4020(01)97571-4
日期:1974.1
(XO) in the presence of two equivalents of sodium hydride followed by alkylation of the intermediate thiolate anion 3. In a similar manner a number of unsymmetrical ketene S,S-acetals were synthesised via thioacylation of 1 with chlorodithioformate esters 2 (XS). The reaction of the ketene O,S-acetals with secondary amines was investigated.
通过在两个当量的氢化钠存在下将丙二腈1与氯代硫代甲酸酯2(X = O)缩合,然后将中间体硫醇盐阴离子3烷基化,制备了酮O,S-乙缩醛。以类似的方式,通过1与氯二硫代甲酸酯2(X = S)的硫酰化反应,合成了许多不对称的乙烯酮S,S-缩醛。研究了烯酮O,S-缩醛与仲胺的反应。