CONSTITUTION:An alpha,beta-unsaturated ketone expressed by formula I (R<1> to R<3> are 1-5C lower alkyl, cyclic aromatic group and substitution product thereof) is mixed with a dialkylzinc expressed by the formula R2Zn, such as dibutylzinc or diethylzinc, in an amount equal to that of ...
Acylzirconocene Chloride as an "Unmasked" Acyl Anion: Enantioselective 1,2-Addition to alpha,beta-Unsaturated Ketone Derivatives Y Hanzawa,N Tabuchi,K Saito,... - 《Angewandte Chemie International Edition》 被引量: 0发表: 1999年 Catalytic asymmetric 1,4-addition reactions using alpha,beta-...
(AIBN) or benzoyl peroxide (BPO) as initiator; oxidizing in the organic solvent; dehydrating through dehydrant; separating and purifying to obtain the alpha, beta-unsaturated ketone; improving reacting receiving rate; reducing manufacturing cost; possessing mild reacting condition; using little catalyst...
The invention relates to an alpha, beta-unsaturated ketone compound containing a 1,2,4-oxadiazoles heterocycle, the structure of which is as shown in general formula 5, wherein R1 is hydrogen, methyl or chlorine; R2 is methyl, chlorine or bromine; R3 is methyl or ethyl; R4 is para-...
The clemmensen reduction of α,β-unsaturated ketones The deoxygenation of the [alpha],[beta]-unsaturated ketones (1) and (5) under the Clemmensen condition yielded the olefins (2) and (6) along with their respective dimers (3+4) and (8+9). The [alpha] , [beta]-unsaturated ketone (...
Undergoes condensation reactions with aldehydes in the presence of SnCl2 or SmI3 to afford α,β-unsaturated ketones. Also useful in the esterification of carboxylic acids. 关联靶点(人) 关联靶点(其它种属) 作用机制 到第页 名称和识别符 化学和物理性质 ...
Alpha-beta unsaturated ketone derivatives useful as herbicides Herbicidal compounds of the formula (I): wherein A is oxygen or sulphur; X is a 1-(1,2,4- triazolyl) or 1-imidazolyl radical; R' is an aliphatic or cycloaliphatic radical substituted by one or more of the following: halogen,...
Alpha,beta-Unsaturated aldehyde refers to a compound with a double bond between the alpha and beta carbon atoms, commonly found in organic chemistry. AI generated definition based on: Comprehensive Chirality, 2012 About this pageAdd to MendeleySet alert ...
alpha,beta-unsaturated ketonealpha-keto-delta-lactoneRing closing metathesis of N,N -diallylanilines and a related 1,2-dihydroquinoline, catalysed by Grubbs... P Evans,Ronald Grigg a,Michael Monteith b - 《Tetrahedron Letters》 被引量: 165发表: 1999年 Synthesis and Biological Evaluation of Sugar...
摘要: Cites research conducted by P.A. Evans and colleagues on the conversion of silyl enol ethers into the corresponding alpha, beta-unsaturated ketones. Use of ceric ammonium nitrate as oxidant for the conversion; Ketone yields.年份: 1995 ...