Synthesis of Monosubstituted Succinic Acids from tert-Butylsuccinate
作者:Stephen C. Bergmeier、Khadiga A. Ismail
DOI:10.1055/s-2000-7110
日期:——
We report the preparation and alkylation of the dianion of t-butylsuccinate. This alkylation reaction has proven to be a useful method for the preparation of monosubstituted succinic acids and anhydrides.
Facile Synthesis of Versatile Enantioenriched α-Substituted Hydroxy Esters through a Brønsted Acid Catalyzed Kinetic Resolution
作者:Ghassan Qabaja、Jennifer E. Wilent、Amanda R. Benavides、George E. Bullard、Kimberly S. Petersen
DOI:10.1021/ol400207t
日期:2013.3.15
An efficient synthesis of enantioenriched α-substituted γ-hydroxy esters via a kinetic resolution event is described. Bulky racemic esters in the presence of a chiral Brønsted acid selectively lactonize to yield a recoverable enantioenriched hydroxy ester and lactone. These esters are highly versatile building blocks that can readily be converted to synthetically useful materials.