STANNOUS TRIFLATE: A FACILE CROSS-ALDOL REACTION BETWEEN TWO KETONES VIA DIVALENT TIN ENOLATES
作者:Rodney W. Stevens、Nobuharu Iwasawa、Teruaki Mukaiyama
DOI:10.1246/cl.1982.1459
日期:1982.9.5
Divalent tinenolates, formed from stannous triflate and ketones, react with a second ketone under mild conditions to afford the corresponding cross-aldol products in good to excellent yields. In the case of the cross-coupling with aromatic ketone, enhanced threo-selectivity was observed.
Cerium enolates formed from cerium (III) chloride and lithium enolates undergo aldolreaction with ketones or sterically crowded aldehydes to afford the corresponding β-hydroxyketones in high yields.