Allylic alcohols can be used directly for the palladium(0)-catalyzed allylation of aryl- and alkenylboronic acids with a wide variety of functional groups. A triphenylphosphine-ligated palladium catalyst turns out to be most effective for the cross-coupling reaction and its low loading (less than 1 mol%) leads to formation of the coupling product in high yield. The Lewis acidity of the organoboron
Palladium(0)-catalyzed direct cross-coupling reaction of allyl alcohols with aryl- and vinyl-boronic acidsElectronic supplementary information (ESI) available: spectral data of compounds. See http://www.rsc.org/suppdata/cc/b4/b402256d/
Allyl alcohols can be directly used for the palladium-catalyzed allylation of aryl- and vinyl-boronic acids without the aid of a base.
烯丙醇可直接用于芳基硼酸和乙烯基硼酸的钯催化烯丙基化,无需碱的帮助。
Palladium-Catalyzed Allyl Cross-Coupling Reactions with In Situ Generated Organoindium Reagents
作者:Kooyeon Lee、Hyunseok Kim、Juntae Mo、Phil Ho Lee
DOI:10.1002/asia.201000890
日期:2011.8.1
compounds may be effective nucleophilic coupling partners in palladium‐catalyzed cross‐coupling reactions. A variety of allyl halides, such as allyl iodide, allyl bromide, crotyl bromide, prenyl bromide, geranyl bromide, and 3‐bromocyclohexene afforded the allylic cross‐coupling products in good to excellent yields. Stereochemistry of the double bond is retained in the allylic cross‐coupling reactions
Oxime Palladacycle-Catalyzed Suzuki-Miyaura Alkenylation of Aryl, Heteroaryl, Benzyl, and Allyl Chlorides under Microwave Irradiation Conditions
作者:José F. Cívicos、Diego A. Alonso、Carmen Nájera
DOI:10.1002/adsc.201100019
日期:2011.7
cocatalyst, and potassium carbonate as base in N,N‐dimethylformamide at 130 °C under microwave irradiation conditions. Under these conditions, styrenes, stilbenes, and alkenylarenes are obtained in good to high yields, and with high regio‐ and diastereoselectivities in only 20 min. The reported protocol is also very efficient for the regioselective alkenylation of benzyl and allyl chlorides to afford allylarenes
Pd(OAc)<sub>2</sub>/P(<i><sup>c</sup></i>C<sub>6</sub>H<sub>11</sub>)<sub>3</sub>-Catalyzed Allylation of Aryl Halides with Homoallyl Alcohols via Retro-Allylation
fashion via a conformationally regulated six-membered cyclic transition state, the allylation reactions are highly regio- and stereospecific when homoallyl alcohols having a substituted allyl group are used. Whereas triarylphosphine is known to serve as a ligand for the palladium-catalyzed allyl transfer reactions, tricyclohexylphosphine proves to significantly expand the scopes of aryl halides to electron-rich