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[高分] The substrates 3, 5, and 7 were prepared starting from the corresponding allylic alcohols by the sequence: 1) conversion into chloroformates by reaction with phosgene, 2) treatment of the chloroformates with o-aminobenzyl alcohol, and 3) conversion of the resulting hydroxy carbamates into the corresponding chlorides with thionyl chloride (see experimental section for details). 3-Chloro-2-methyl-2- propen-1-ol was prepared according to A
底物3、5和7从相应的烯丙醇开始按照以下顺序制备:1)通过与光气反应转化为氯甲酸酯,2)用邻氨基苄醇处理氯甲酸酯,和3)用亚硫酰氯将所得羟基氨基甲酸酯转化为相应的氯化物(详情参见实验部分)。3-氯-2-甲基-2-丙烯-1-醇
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Mooradian, J. B. Cloke, J.Am. Chem. Soc. 1946, 68, 785 ± 789; L. F. Hatch, J. J. Russ, L. B.Gordon, J. Am. Chem. Soc. 1947, 69, 2614 ± 2616. Enantiomericallypure (R)-2-cyclohexen-1-ol was prepared by kinetic resolution with lipase as described by T. Fukazawa, T. Hashimoto, Tetrahedron:Asymmetry 1993, 4, 2323 ± 2326. |
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