Synthesis and Reactivity of β-Amino α,β -Unsaturated Ketones and Esters Using K-10 Montmorillonite
作者:Mara E. F. Braibante、Hugo S. Braibante、Lauri Missio、Adriano Andricopulo
DOI:10.1055/s-1994-25595
日期:——
A series of β-amino α,β-unsaturated ketones 3a-f and esters 3g-l may be conveniently prepared by dispersing ammonia (NH4OH solution), primary amines and 1,3-diketones or 1,3-keto esters on K-10 montmorillonite without solvent. This procedure was also applicable to the reactions of 3a and 3g with phenyl isocyanate and phenyl isothiocyanate which afford selectively the C-adducts 4a-d.
一系列β-氨基α,β-不饱和酮3a-f和酯3g-l可以通过无溶剂条件下在K-10蒙脱石上分散氨(NH4OH溶液)、伯胺和1,3-二酮或1,3-酮酯来方便地制备。该方法同样适用于3a和3g与苯基异氰酸酯和苯基异硫氰酸酯的反应,优先生成C-加成物4a-d。