Electronic effects of alkyl groups

✍ Scribed by F.G. Bordwell; Herbert E. Fried

• Book ID: 104243962
• Publisher: Elsevier Science
• Year: 1977
• Tongue: French
• Weight: 228 KB
• Volume: 18
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(01)92847-3

✦ Synopsis

The use of Taft u* constants as measures of electronic effects of alkyl groups has been the subject of considerable discussion.

In Taft's original analysis, u*'s for aysS1 groups, R, (and hydrogen) were derived from hydrolyses of esters, such as RCOtEt, where R is attached to an sp2 hybridized carbon atom, whereas u*'s for heteroatom groups, G, were derived, for the most part, from the hydrolyses of esters, such as GCHzC02Et, where