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乙酰乙酸乙酯和丙二酸二乙酯烷基化方法的改进BarbryD等[OrgPrepProcedInt1994;26,469]乙酰乙酸乙酯和烯丙基溴以K2CO3为碱、3%TBA作PTC,于甲苯中80℃反应1h,单烷基化收率最佳58%。延长反应时间,单烷基化收率...
Improvement of Alkylation of Ethyl Acetoacetate and Diethyl Malonate BarbryD et al [OrgPrep Procedlnt 1994; 26, 469] Ethyl acetoacetate and allyl bromide with K2CO3 as base and 3% TBA as PTC in toluene 80 ℃ reaction 1h, the best single alkylation yield of 58%. Extend the reaction time, monoalkylated yield ...