申请人:——
公开号:US03947488A1
公开(公告)日:1976-03-30
Thallous salts of .beta.-dicarbonyl compounds, prepared by reaction of the .beta.-dicarbonyl compounds with a thallous alkoxide, are treated with alkyl halides to give C-alkyl products in high yield, with acyl halides at room temperature to give C-acyl products, and with acyl halides at low temperatures to give O-acyl products. Thallous phenolates are esterified with acyl or aroyl halides. Anhydrides are also prepared, as are biaryls and bi-sec-alkyls. N-Heterocyclics, including purines and pyrimidines, are N-alkylated. Lactams are O-acylated or N-alkylated.
通过将.beta.-二羰基化合物与铊烷氧化物反应制备出铊盐,然后用烷基卤代物处理,可以高产得到C-烷基产物;室温下用酰卤代物处理可以得到C-酰基产物;低温下用酰卤代物处理可以得到O-酰基产物。铊酚盐可以与酰卤代物或芳酰卤代物酯化。还可以制备酐、联苯和双二级烷基。包括嘌呤和嘧啶在内的N-杂环化合物可以进行N-烷基化。内酰胺可以进行O-酰基化或N-烷基化。