Titanium enolates and “ate” complexes of N,N-disubstituted amides and thioamides in the Michael reaction.
作者:Lilia Z. Viteva、Tzveta S. Gospodova、Yuri N. Stefanovsky
DOI:10.1016/s0040-4020(01)85243-1
日期:1994.1
The synthetic potential, regio- and stereoselectivity of titanium dialkylamide and dialkylthioamide enolates and “ate” complexes in reaction with some conjugate carbonyl compounds are investigated. Titaniumenolates react preferentially in 1,2-position while “ate” complexes afford 1,4-regiocontrol. The stereochemical behaviour of the latter follows in general the lithium and potassium precursors. Marked
Benzyl alcohols were converted into the corresponding one carbon-homologated amides or esters in one pot by cobaltcarbonyl catalyzed carbonylation in the presence of ethyl polyphosphate (PPE) and sodium iodide.
Viteva, Lilia Z.; Gospodova; Stefanovsky, Journal of Chemical Research - Part S, 2000, # 3, p. 133 - 135
作者:Viteva, Lilia Z.、Gospodova、Stefanovsky
DOI:——
日期:——
Michael reaction. V. Stereochemistry of the NaNH2 catalyzed two-step reaction between phenylacetic acid dialkyl amides and methyl cinnamate or cinnamic acid dialkyl amides