91232-97-2Relevant academic research and scientific papers
Approaches to selective isoprenologation via reactions of (η3-allyl)Fe(CO)4+ with allyl nucleophiles
Li, Zhong,Nicholas, Kenneth M.
, p. 105 - 112 (2007/10/02)
The reactions of substituted (η3-allyl)Fe(CO)4BF4 complexes 1 with various allyl-metals and dienolate derivatives have been investigated in search of a method for regio- and stereocontrolled allyl-allyl coupling.All three classes of allyl derivatives react with 1 in moderate to good yield with variable regioselectivity; the silyl derivatives 2 generally provide good regioselectivity for attack at the less substituted terminus of unsymmetrical derivatives of 1 but deprotonation of the 1,1-dimethylallyl complex 1e prevents efficient isoprenylation.Although deprotonation of 1e also dominates with the siloxydienes, the lithium dienolates couple efficiently with 1; however, reaction at the α position of the dienolate dominates.
ALDOL REACTIONS, CONJUGATE ADDITIONS, AND ALKYLATION REACTIONS OF O-SILYLATED KETENE ACETALS UNDER NEUTRAL CONDITIONS
Yamamoto, Yoshinori,Maruyama, Kazuhiro,Matsumoto, Kiyoshi
, p. 1075 - 1078 (2007/10/02)
Aldol reactions, conjugate additions, and alkylation reactions of O-silylated ketene acetals take place under neutral conditions by using a high pressure technique.
