Acceleration of the Morita−Baylis−Hillman Reaction by a Simple Mixed Catalyst System
摘要:
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.
Vinyl Anion Equivalents. Part IV. Efficient Synthesis of 2-(1-Hydroxyalkyl)-2-cyclopenten-1-ones
作者:Shinya Kusuda、Yoshio Ueno、Takeshi Toru
DOI:10.1246/bcsj.66.2720
日期:1993.9
Aldol reactions of lithium enolates resulted from conjugate additions of tributylstannyllithium to 2-(phenylseleno)-2-cyclopenten-1-one provides 2-(1-hydroxyalkyl)-2-cyclopenten-1-ones in high yields. Significantly good 1,4-asymmetric induction took place in analogous aldol reactions starting with chiral 4-[(t-butyldimethylsilyl)oxy]-2-(phenylseleno)-2-cyclopenten-1-one.
[DE] 2-ALKYLIDEN- UND 2-(ALKYL-1-EN)-CYCLOPENTANONE ALS RIECHSTOFFE<br/>[EN] 2-ALKYLIDENE- AND 2-(ALKYL-1-ENE)-CYCLOPENTANONE AS PERFUMES<br/>[FR] 2-ALKYLIDENE-CYCLOPENTANONES ET 2-(ALKYL-1-ENE)-CYCLOPENTANONES COMME PARFUMS
申请人:SYMRISE GMBH & CO KG
公开号:WO2006030010A1
公开(公告)日:2006-03-23
Beschrieben wird die Verwendung einer Verbindung der Formel (Ia) oder (Ib), wobei in jeder der Formeln (Ia) und (Ib), R1 H oder Methyl und R2 eine verzweigte oder unverzweigte C1- bis C5-Alkylgruppe ist, als Jasmin-Riechstoff.
2-ALKYLIDEN- UND 2-(ALKYL-1-EN)-CYCLOPENTANONE ALS RIECHSTOFFE
申请人:Symrise GmbH & Co. KG
公开号:EP1791804A1
公开(公告)日:2007-06-06
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.