Remote stereocontrol using rotationally restricted amides: (1,5)-asymmetric induction
作者:Jonathan Clayden、Megan Darbyshire、Jennifer H. Pink、Neil Westlund、Francis X. Wilson
DOI:10.1016/s0040-4039(97)10289-1
日期:1997.12
The stereochemical influence of a rotationallyrestricted amide group extends widely across substituted aromatic amides. Stereogenic centres can be created with high levels of (1,5)-stereocontrol when electrophiles are added to the enolates of 2-ketonaphthamides or to lithiated 2-alkylnaphthamides. Sequential double lateral lithiation of 2,6-dialkylbenzamides can lead to compounds containing (1,5)