Alternative intermediates for glycerol valorization: iridium-catalyzed formation of acetals and ketals
作者:Corrado Crotti、Erica Farnetti、Nicol Guidolin
DOI:10.1039/c0gc00096e
日期:——
The organoiridium derivatives [Cp*IrCl2]2 (Cp* = pentamethylcyclopentadienyl) and [Cp*Ir(Bu2-NHC)Cl2], (Bu2-NHC = 1,3-di-n-butylimidazolylidene) catalyzed glycerol acetalization with several ketones and aldehydes, as well as transacetalization. All the catalytic reactions produced the five-membered cyclic ketals, i.e. the 1,3-dioxolanes, as main products, with selectivities of 94–100% for ketals, and up to 83% for acetals.
Palladium catalyst and process for producing ether
申请人:Kao Corporation
公开号:US06657089B1
公开(公告)日:2003-12-02
This invention relates to a palladium catalyst comprising a mesoporous aluminosilicate which has been treated with ammonia or a salt thereof, and palladium supported on said mesoporous aluminosilicate; and also to a process for producing an ether, which comprises reacting a cyclic acetal and hydrogen in the presence of the palladium catalyst.
PALLADIUM CATALYST AND PROCESS FOR PRODUCING ETHER
申请人:Kao Corporation
公开号:EP1236511A1
公开(公告)日:2002-09-04
This invention relates to a palladium catalyst comprising a mesoporous aluminosilicate which has been treated with ammonia or a salt thereof, and palladium supported on said mesoporous aluminosilicate; and also to a process for producing an ether, which comprises reacting a cyclic acetal and hydrogen in the presence of the palladium catalyst.
The present invention relates to providing a novel glyceric acid ester which can be produced in a high yield and is expected to be applied as a synthetic intermediate, and a method of producing the same. In addition, the present invention relates to providing a novel glyceric acid ester which exhibits a high recovery in a water-washing step after the reaction and a small work load at the time of production, and is expected to be applied as a synthetic intermediate, and a method of producing the same. The present invention provides a method of producing a compound represented by the following formula (II), including a step of oxidatively esterifying a compound represented by the following formula (I):
wherein, in the formulae (I) and (II), R1 and R2 each independently represent a hydrogen atom or a monovalent hydrocarbon group, or R1 and R2 are bonded to each other to form a divalent hydrocarbon group for constituting a ring structure, provided that the case where R1 and R2 are a methyl group at the same time is excluded.