Propylene carbonate is shown to be an environmentally friendly and sustainable replacement for dichloromethane and acetonitrile in proline-catalysed a-hydrazinations of aldehydes and ketones. Enantioselectivities comparable to those obtained in conventional solvents or ionic liquids can be obtained, even when using a lower catalyst loading.
                                    研究表明,在脯
氨酸催化的醛和酮的 a-
肼化反应中,
碳酸丙烯酯是
二氯甲烷和
乙腈的环保型可持续替代品。即使使用较低的催化剂负载,也能获得与在传统溶剂或
离子液体中获得的对映选择性相当的对映选择性。