Mannich-Type Reaction in Water in the Presence of a Surfactant
作者:Takahiko Akiyama、Junji Itoh、Kohei Fuchibe
DOI:10.1055/s-2006-950344
日期:2006.12
The effect of sodium dodecyl sulfate (SDS) loading in fluoroboric acid catalyzed Mannich-type reactions of ketene silyl acetals with aldimines was studied. The reaction proceeded smoothly in the presence of 1 mol% of SDS. Formation of small particles was observed by transmission electron microscopy.
Preparation of β-Amino Esters by a Chiral Brønsted Acid Catalyzed Mannich-Type Reaction
作者:Takahiko Akiyama、Junji Itoh、Kohei Fuchibe
DOI:10.1055/s-2008-1032017
日期:2008.4
Mannich-typereactions of ketene silyl acetals with aldimines proceeded smoothly under the influence of 10 mol% of a cyclic chiral phosphate derivative derived from ( R)-BINOL as a chiral Bronsted acid catalyst to furnish β-amino esters with excellent enantio-selectivities.