l-Prolinamide-catalyzed direct nitroso aldol reactions of α-branched aldehydes: a distinct regioselectivity from that with<scp>l</scp>-proline
作者:Hai-Ming Guo、Li Cheng、Lin-Feng Cun、Liu-Zhu Gong、Ai-Qiao Mi、Yao-Zhong Jiang
DOI:10.1039/b514194j
日期:——
The first direct enantioselective N-nitroso aldol reaction of aldehyde with nitrosobenzene catalyzed by an L-prolinamide derivative is presented; the reactions proceed smoothly furnishing the α-hydroxyamino carbonyl compounds, the otherwise disfavored products, in good yields with up to 64% ee.
该研究首次提出了在 L-脯氨酰胺衍生物催化下醛与亚硝基苯的直接对映选择性 N-亚硝基醛醇反应;反应进行顺利,生成了δ-羟基氨基羰基化合物(原本不受欢迎的产物),收率良好,ee高达 64%。