Mizoroki–Heck reaction of 1,2-disubstituted aryl alkenes: Variables of synthesis, solvent and ligand modulation of reactivity
作者:Pronnoy G. Bangar、Priyanka R. Jawalkar、Swapnil R. Dumbre、Pallavi K. Raut、Dharmaraj J. Patil、Neethu Tv、Shana Sudhakaran、Suresh Iyer
DOI:10.1080/00397911.2020.1811986
日期:2020.12.16
Abstract Reaction of aryl iodides with 1,2-disubstituted aryl alkenes in the presence of TBABr/TBACl gave high yields of the Mizoroki–Heck product. Phosphine ligands were used for the modulation of reactivity and stereoselectivity, for the reaction of 4-iodoanisole with cinnamaldehyde. tert-Bu3P.HBF4 gave the highest E:Z ratio of 1:0.08. The use of PEG-200 and PEG-400 as solvent could activate the
Selective reactivity of electron-rich aryl iodides in the Heck arylation of disubstituted alkenes catalyzed by palladium–arylurea complexes
作者:Matthew R. Smith、Young Jin Jang、Jung Yun Kim、Marco A. Ciufolini
DOI:10.1016/j.tet.2013.09.019
日期:2013.11
A catalyst consisting of 1 mol % of the 1:2 complex of Pd(OAc)(2) with N-(4-carbethoxyphenyl)urea promotes the Heck arylation of 2- or 3-substituted, conjugated esters, nitriles, aldehydes, and ketones (an uncharacteristically broad range of substrates), but only with electron-rich aryl iodides (an uncharacteristically narrow range of halides). (C) 2013 Elsevier Ltd. All rights reserved.
Singh, Gurdeep; Purkayastha, Makhan L.; Ila, Hiriyakkanavar, Journal of the Chemical Society. Perkin transactions I, 1985, p. 1289 - 1294
Hypervalent Iodine in Synthesis XXX: Palladium-Catalyzed Reaction of Diaryliodonium Salts with β-substituted-α, β-enones
作者:Min Xia、Zhen Chu Chen
DOI:10.1080/00397910008087149
日期:2000.4
The reaction of diaryliodonium salts with beta-substituted-alpha,beta-enones in the presence of a palladium catalyst affords H-beta-substituted products with excellent yields.