Asymmetric conjugate addition of grignard reagents to 3-silyl unsaturated esters for the facile preparation of enantioenriched β-silylcarbonyl compounds and allylic silanes

• Main Authors: Zhao, Kai, Loh, Teck-Peng
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2015
• Subjects: DRNTU::Science::Chemistry::Organic chemistry
• Online Access: https://hdl.handle.net/10356/96686; http://hdl.handle.net/10220/38502
• Institution: Nanyang Technological University

A highly enantioselective conjugate addition of Grignard reagents to 3-silyl unsaturated esters to deliver synthetically useful chiral β-silylcarbonyl compounds was developed. The synthetic value of this methodology was further illustrated by the synthesis of enantioenriched β-hydroxyl esters and the facile access granted to various α-chiral allylic silanes. A plethora of diastereoselective transformations of β-silylenolates were also investigated and afforded manifold organosilanes that contained contiguous stereogenic centers with excellent enantioselectivity.