(Pi-allyl)palladium complexes bearing diphosphinidenecyclobutene ligands (DPCB): highly active catalysts for direct conversion of allylic alcohols.

(Pi-allyl)palladium complexes bearing diphosphinidenecyclobutene ligands (DPCB): highly active catalysts for direct conversion of allylic alcohols. Research Abstract Details 

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(Pi-allyl)palladium complexes bearing diphosphinidenecyclobutene ligands (DPCB): highly active catalysts for direct conversion of allylic alcohols. Abstract Text:

Fumiyuki Ozawa,Hideyuki Okamoto,Seiji Kawagishi,Shogo Yamamoto,Tatsuya Minami,Masaaki Yoshifuji,

The (pi-allyl)palladium complex bearing an sp2-hybridized phosphorus ligand (DPCB-OMe: 1,2-bis(4-methoxyphenyl)-3,4-bis[(2,4,6-tri-tert-butylphenyl)phosphinidene]cyclobutene) efficiently catalyzes direct conversion of allylic alcohols in the absence of activating agents of alcohols such as Lewis acids. N-Allylation of aniline proceeds at room temperature to afford monoallylated anilines in 90-97% yields. C-Allylation of active methylene compounds is also successful at 50 degrees C using a catalytic amount of pyridine as a base, giving monoallylation products in 85-95% yields. The catalytic mechanism involving hydrido- and (pi-allyl)palladium intermediates has been proposed on the basis of stoichiometric examinations using model compounds of presumed intermediates.

(Pi-allyl)palladium complexes bearing diphosphinidenecyclobutene ligands (DPCB): highly active catalysts for direct conversion of allylic alcohols. Publishing Authors By Initials

F Ozawa,H Okamoto,S Kawagishi,S Yamamoto,T Minami,M Yoshifuji,

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(Pi-allyl)palladium complexes bearing diphosphinidenecyclobutene ligands (DPCB): highly active catalysts for direct conversion of allylic alcohols. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Journal of the American Chemical Society

VOLUME: 124

Page Numbers: 10968-9

Journal Abbreviation: J. Am. Chem. Soc.

ISSN: 0002-7863

DAY: 18

MONTH: Sep

YEAR: 2002

(Pi-allyl)palladium complexes bearing diphosphinidenecyclobutene ligands (DPCB): highly active catalysts for direct conversion of allylic alcohols. Information

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LANGUAGE: eng

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AFFILIATION: Department of Applied Chemistry, Graduate School of Engineering, Osaka City University, Osaka 558-8585, Japan. ozawa@a-chem.en-g.osaka-cu.ac.jp

Country: United States

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MEDLINETA: J Am Chem Soc

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