The catalytic efficacy of the smallest organocatalyst, l-proline hydrazide, prepared from a cheaply available natural amino acid, such as l-proline, was studied for the direct asymmetric aldol reaction of various ketones with aromatic aldehydes at room temperature in the presence of several acid additives.
最小有机催化剂l-脯氨酸肼的催化效果被研究,该催化剂是从廉价易得的天然氨基酸l-脯氨酸制备而成的,用于室温下在几种酸添加剂存在下进行各种酮与芳香醛的直接不对称Aldol反应。