The compounds are prepared by subjecting to the action of a Lewis acid an unsaturated ketone of the formula <FORM:1077837/C2/2> where R3 is H or methyl, the product being an a -ionone if R3 is H or a b -ionone if R3 is methyl. 展开 ...
Hanzawa Y,Tabuchi N,Saito K, et al.Acylzirconocene chloride as an "unmasked" acyl anion: Enantioselective 1,2-addition to a, p-unsaturated ketone derivatives.Angewandte Chemie International Edition. 1999Dossetter A. G,Jamison T. F,Jacobsen E. N.Acylzirconocene chloride as an unmasked acy...
Treatment of the polymer-supported -phenylseleno ketones and esters prepared from polymer-supported selenium bromide with ketone and ester enolates with hy... SR Sheng,XL Liu,XC Wang - 《Journal of the Chinese Chemical Society》 被引量: 2发表: 2013年 ...
agive the a,@-unsaturated ketone which undergoes a Michael addition with the second nucleophilic reagent to yield the product of exchangelo or by an ionic mechanism when the absence of a @-hydrogen atom does not permit the formation of a vinyl ketone 给a, @-unsaturated进行迈克尔加法以第二种...
The photochemistry of an acyclic bis β,γ-unsaturated ketone [11] The photochemical reactions of six acyclic β,γ-unsaturated ketones have been investigated. Direct irradiation of those with a simple olefin (11, 15, 16) leads to an α-cleavage, cyclobutanol, or oxetane, with the quantum yi...
The stereochemistry of cyanide ion addition to 1-acetyl-4-t-butylcyclohexene involves preferred axial attack of the nucleophile. This ketone and related ones give π-allylpalladium derivatives in which the acetyl group is preferentially ... CW Alexander,WR Jackson - 《Journal of the Chemical Society...
The ability of certain organometallic reagents to react via 1,2- or 1,4-addition to an 伪,尾-unsaturated ketone is a fundamental example of regioselectivit... TP Truong,SJ Bailey,AE Golliher,... - 《Journal of Chemical Education》 被引量: 0发表: 2018年 ...
1) α,β-unsaturated-γ-keto-lactone α,β-不饱和-γ-缩酮内酯2) α,β-unsaturated ketones and esters α,β-不饱和酮、酯1.Treatment of the polymer-supported α-phenylseleno ketones and esters prepared from polymer-supported selenium bromide with ketone and ester enolates with hydrogen peroxid...
On the other hand, an alpha,beta-unsaturated cyclic diazoketone 2a prepared from 2-cyclohexen-1-one polymerized to give a polymer poly2a' with M-n =... ETTK Ihara - 《Journal of Polymer Science Part A Polymer Chemistry》 被引量: 0发表: 2008年 Novel conductive multi-walled polymeric nano...
1,4-addition reactionA reaction mixture of β,γ-unsaturated ketone and BF3·OEt2in CH3OH was stirred at room temperature and β-methoxy ketone was produced in high yield. The β-amino ketone was obtained as the major product from a reaction mixture of β,γ-unsaturated ketone, AlCl3and ...