Pyridinium salts structurally related to NAD(P)+ as enolate transferring agents
作者:Sabir H. Mashraqui、Richard M. Kellogg
DOI:10.1021/ja00364a079
日期:1983.12
La reaction du bromure de propyl-1 phenylcarbamoyl-3 pridinium avec l'acetophenone conduit au benzoylmethyl-4 propyl-1 dihydro-1,4 N-phenylnicotinamide qui, en solutions Mg(ClO 4 ) 2 •2H 2 O subit une condensation aldolique avec des aldehydes
La 反应 du bromure de 丙基-1 phenylcarbamoyl-3 pridinium avec l'acetophenone 管道 au benzoylmethyl-4 propyl-1 dihydro-1,4 N-phenylnicotinamide qui, en 溶液 Mg(ClO 4 ) 2 •2H 2 O subit une 缩合醛乙醛
Carbon–carbon bond formation between α-halogenoketones and aldehydes promoted by cerium(<scp>III</scp>) iodide or cerium(<scp>III</scp>) chloride–sodium iodide
α-Halogenoketones react with aldehydes to form α,β-unsaturated ketones accompanied by dehalogenation in the presence of cerium(III) iodide, but use of cerium(III) chloride–sodiumiodide results in the formation of β-keto alcohols.
The Aldol Reaction under High-Intensity Ultrasound: A Novel Approach to an Old Reaction
作者:Giancarlo Cravotto、Alberto Demetri、Gian Mario Nano、Giovanni Palmisano、Andrea Penoni、Silvia Tagliapietra
DOI:10.1002/ejoc.200300369
日期:2003.11
We have employed high-intensityultrasound (HIU) to reinvestigate the aldolreaction (AR) in water. A number of aldols that under usual conditions would undergo elimination were isolated in acceptable to good yields. Within 15−30 min, acetophenone reacted with non-enolizable aldehydes to afford the aldol exclusively, while under conventional conditions (stirring or heating under reflux) the same compounds