Organocatalytic Enantioselective α-Nitrogenation of α,α-Disubstituted Aldehydes in the Absence of a Solvent
作者:Alejandro Torregrosa-Chinillach、Asier Carral-Menoyo、Enrique Gómez-Bengoa、Rafael Chinchilla
DOI:10.1021/acs.joc.2c01919
日期:2022.11.4
of α,α-disubstituted aldehydes with azodicarboxylates promoted by a chiral carbamate-monoprotected cyclohexa-1,2-diamine as organocatalyst has been developed. The process was carried out without any solvent, and the corresponding α,α-disubstituted α-nitrogenated aldehydes were obtained with excellent yields and enantioselectivities up to 99% ee. The sustainability of the procedure was established through
开发了一种由手性氨基甲酸酯单保护环己-1,2-二胺作为有机催化剂促进的 α,α-二取代醛与偶氮二羧酸盐的高效对映选择性 α-氮化方法。该过程在没有任何溶剂的情况下进行,并以优异的收率和高达 99% ee的对映选择性获得了相应的 α,α-二取代的 α- 硝化醛。该程序的可持续性是通过计算绿色指标(例如 EcoScale 和 E-factor)来确定的。此外,理论计算已被用来证明获得的对映选择性意义。