17574-85-5Relevant articles and documents
InCl3/Me3SiBr-catalyzed direct coupling between silyl ethers and enol acetates
Onishi, Yoshiharu,Nishimoto, Yoshihiro,Yasuda, Makoto,Baba, Akio
supporting information; experimental part, p. 2762 - 2765 (2011/08/02)
A combined Lewis acid catalyst of InCl3 and Me3SiBr promoted the direct use of enol acetates in the coupling with low-reactive silyl ethers, in which functional groups including ketones and aldehydes survived. Sterically hindered silyl ethers such as ROSiEt3, ROSiPh3, ROSit-BuMe2, and ROSii-Pr3 were also applicable.
Ligand-controlled regio- and stereoselective addition of carboxylic acids onto terminal alkynes catalyzed by carbonylruthenium(0) complexes
Tan, Sze Tat,Fan, Wai Yip
experimental part, p. 4631 - 4635 (2011/02/27)
The addition of carboxylic acids onto terminal alkynes was catalyzed by mononuclear ruthenium(0) complexes to give enol esters in high yields. By using ligands with different electronic properties, product selectivity was achieved. E-enol esters were preferentially produced when tricarbonyl(η4- diene)ruthenium complexes were used; while geminal enol esters were produced when tricarbonylbis(phosphane)ruthenium complexes were used. Product selectivity is a major problem in transition metal-catalyzed hydrocarboxylation reactions. In this paper we report the ability of Ru(CO)3L2 (where L is a 2 e-donor) to catalyze the addition of variouscarboxylic acids onto terminal alkynes. A direct relationship between the regioselectivity of the product and the electronic property of the catalysis metal centre was observed.
Ru-mediated selective addition reactions of carboxylic acids to internal and terminal alkynes
Karabulut, Solmaz,?ztürk, Bengi ?zgün,Imamo?lu, Yavuz
experimental part, p. 2161 - 2166 (2010/09/15)
This study examined the nucleophilic addition of trichloroacetic acid to internal alkynes using RuCHPhCl2(PCy3)(IPr) (IPr: [1,3-Bis(2,6-diisopropylphenyl)-1,3-dihydro-2H-imidazo-2-ylidene]). This reaction was performed in good yield
A New and Selective Metal-Catalyzed Baeyer-Villiger Oxidation Procedure
G?ttlich, Richard,Yamakoshi, Koichi,Sasai, Hiroaki,Shibasaki, Masakatsu
, p. 971 - 973 (2007/10/03)
A new, highly selective and high yielding procedure is described for the Baeyer-Villiger oxidation, using a tin-catalyst and bis(trimethylsilyl) peroxide (BTP).