Diastereoselection in titanium enolate addition to aldmines

Abstract

A mild and versatile synthesis of a-oxy-6-amino esters has been performed by condensation of the chlorotitanium enolates of methyl methoxyacetate with aldimines. The imine-aldol addition occurs in excellent yields without Lewis acid activation of the imine. All aryl imines examined show good to excellent diastereoselection for the anti isomers

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