p-Methoxyphenylimines obtained from enolizable aldehydes react in the absence of catalysts at room temperature with β-keto carboxylic acids through a decarboxylative Mannich reaction. The Mannich products were obtained with a high degree of anti selectivity. By use of chiral oxygen-containing aldehydes, operationally simple access to aminohydroxylated polyketide substructures is possible.
由可烯醇化醛获得的对
甲氧基苯基
亚胺在没有催化剂的情况下在室温下通过脱羧曼尼希反应与 β-
酮羧酸反应。以高度的抗选择性获得曼尼希产物。通过使用手性含氧醛,可以在操作上简单地获得
氨基羟基化聚酮化合物亚结构。