Tandem conjugate addition. Aldol reactions employing 9-(phenylseleno)-9-borabicyclononane: a novel method for effecting formal aldol condensations at the .alpha.-carbon of .alpha.,.beta.-unsaturated ketones
Efficient Baylis−Hillman Reactions of Cyclic Enones in Methanol As Catalyzed by Methoxide Anion
作者:Sanzhong Luo、Xueling Mi、Hui Xu、Peng George Wang、Jin-Pei Cheng
DOI:10.1021/jo0491760
日期:2004.11.1
The Baylis−Hillman reactions of cyclic enones with a variety of aldehydes were investigated. 1,8-Diazabicyclo[5.4.0]undec-7-ene (DBU) was found to be a viable catalyst in promoting the reactions of sterically retarded substrates in methanol. The reactions showed clear solvent dependence and only occurred in hydroxylic solvents, especially in methanol. Further consideration on the steric character of
LEONARD, W. R.;LIVINHOUSE, T., J. ORG. CHEM., 1985, 50, N 5, 730-732
作者:LEONARD, W. R.、LIVINHOUSE, T.
DOI:——
日期:——
Tandem conjugate addition. Aldol reactions employing 9-(phenylseleno)-9-borabicyclononane: a novel method for effecting formal aldol condensations at the .alpha.-carbon of .alpha.,.beta.-unsaturated ketones
作者:William R. Leonard、Tom Livinghouse
DOI:10.1021/jo00205a048
日期:1985.3
Acceleration of the Morita−Baylis−Hillman Reaction by a Simple Mixed Catalyst System
作者:Alejandro Bugarin、Brian T. Connell
DOI:10.1021/jo900603w
日期:2009.6.19
By using a catalytic amount of 4-dimethylaminopyridine (DMAP) as a nucleophile in the presence of an equal amount of tetramethylethylenediamine (TMEDA) and MgI2, Morita-Baylis-Hillman adducts can be obtained in good to excellent yields from various aromatic and aliphatic aldehydes and cyclic enones/enoates at room temperature after convenient reaction times.