Synthesis of Tertiary β-Hydroxy Amides by Enolate Additions to Acylsilanes
作者:Robert B. Lettan、Troy E. Reynolds、Chris V. Galliford、Karl A. Scheidt
DOI:10.1021/ja065605v
日期:2006.12.1
synthesis of tertiary β-hydroxy amides from acylsilanes, acetamides, and electrophiles is described. The addition of amide enolates to acylsilanes generates β-silyloxy homoenolate reactivity by undergoing a 1,2-Brook rearrangement. These unique nucleophiles formed in situ can then undergo smooth addition to alkyl halides, aldehydes, and ketones. Enolates derived from amides are crucial for the success
Amide Enolate Additions to Acylsilanes: In Situ Generation of Unusual and Stereoselective Homoenolate Equivalents
作者:Robert B. Lettan、Chris V. Galliford、Chase C. Woodward、Karl A. Scheidt
DOI:10.1021/ja808811u
日期:2009.7.1
The synthesis of beta-hydroxy carbonyl compounds is an important goal due to their prevalence in bioactive molecules. A novel approach to construct these structural motifs involves the multicomponent reaction of acylsilanes, amides, and electrophiles. The addition of amide enolates to acylsilanes generates beta-silyloxy homoenolate reactivity by undergoing a 1,2-Brook rearrangement. These unique nucleophiles