Recent developments in the use of catalytic asymmetric ammonium enolates in chemical synthesis

A review on the recent development of methods that makes use of chiral tertiary amine catalysts as a source to generate asymmetric ammonium enolates is presented. The types of ammonium enolates were identified. A discussion was made on the catalytic asymmetric C1 ammonium enolates. Both the type B and C of ammonium enolates were described. The type B had the catalytic asymmetric ammonium ylides while the type C had the catalytic asymmetric C3 substituted ammonium enolates.