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从L-丙氨酸出发,合成了3个手性Betti碱的L-丙氨酰衍生物.该反应条件温和,操作简单,目标产物产率较高. 相似文献
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Ethyl acetamidomalonate was alkylated using three alkylating agents, both by microwave irradiation of a mixture of the malonate , the alkylating agent, potassium carbonate, TEBA, and DMF for 0. 5 to 1. 5 min and by heating a solution of the malonate , sodium ethoxide, and the alkylating agent in ethanol for several hours. The two methods gave, comparable results. 相似文献
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从脯氨酸合成一种三齿手性配体及其在二乙基锌对醛的对映选择性加成中的应用 总被引:1,自引:0,他引:1
A new chiral tridentate ligand [1-(1-methyl-S-pyrrolidin-2-ylmethyl)-S-pyrrolidin-2-yl]-diphenylmethanol (1) has been successfully synthesized from S-proline. The structure of the ligand was characterized by NMR spectra and X-ray diffraction analysis. Its catalytic ability has also been examined in enantioselective addition of diethylzinc towards aldehydes with 15%-84% enantiomeric excesses (ee). 相似文献
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