Selective alkylation of β-ketoester enolates using O-methyl aminosulfoxonium salts; the first example of C-alkylation using sulfoxonium salt electrophiles
作者:I. Fraser Pickersgill、Allan P. Marchington、Christopher M. Rayner
DOI:10.1039/c39940002597
日期:——
The alkylation of β-ketoester enolates with O-methyl aminosulfoxonium tetraphenylborate salts is reported; good to excellent selectivity for C-vs. O-alkylation is observed, and is found to be dependent on the nature of the β-ketoester, solvent, metal counterion and aminosulfoxonium salt.
据报道,β-酮酸酯烯酸酯与O-甲基氨基ulf四苯基硼酸盐发生烷基化。观察到对C-与O-烷基化具有良好的至优异的选择性,并且发现其取决于β-酮酸酯,溶剂,金属抗衡离子和氨基s盐的性质。