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1.
Chirality ; 23(3): 272-6, 2011 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-20939099

RESUMO

Chiral phosphine-Schiff base type ligand L8 prepared from (R)-(-)-2-(diphenylphosphino)-1,1'-binaphthyl-2'-amine was found to be a fairly effective ligand for Cu(I)-promoted enantioselective chlorination of ß-keto esters to give the corresponding products in high yields and with moderate enantioselectivities.

2.
Chem Commun (Camb) ; (40): 4998-5000, 2008 Oct 28.
Artigo em Inglês | MEDLINE | ID: mdl-18931765

RESUMO

This paper describes an unexpected and novel nucleophilic phosphine-catalyzed annulation of ethyl (arylimino)acetates to give polysubstituted oxoimidazolidine derivatives in moderate to good yields from simple and easily available starting materials under mild conditions. In this reaction, the addition of methyl vinyl ketone (MVK) is essential to induce the formation of oxoimidazolidines.


Assuntos
Acetatos/química , Imidazolidinas/síntese química , Fosfinas/química , Catálise , Temperatura
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