Palladium-Catalyzed Dehydrative Cross-Coupling of Allylic Alcohols and <i>N</i>-Heterocycles Promoted by a Bicyclic Bridgehead Phosphoramidite Ligand and an Acid Additive
作者:Kyungjun Kang、Jaewook Kim、Ansoo Lee、Woo Youn Kim、Hyunwoo Kim
DOI:10.1021/acs.orglett.6b00001
日期:2016.2.5
A mild and efficient dehydrative cross-coupling reaction between allylic alcohols and N-heterocycles using palladium catalysis is reported. A bicyclic bridgehead phosphoramidite (briphos) ligand together with Pd(dba)2 is a highly efficient catalyst, and an acid additive involved in the rate-determining step promotes the catalytic cycle. The coupling reaction of allylic alcohols with N-heterocycles
Process for preparing a 1-substituted 5-hydroxymethyl imidazole
申请人:LG Chem Investment Ltd.
公开号:US06630593B1
公开(公告)日:2003-10-07
A process for preparing a 1-substituted 5-hydroxymethylimidazole of the formula:
, wherein R represents alkyl, hydroxyalkyl, allyl, or substituted or unsubstituted arylmethyl or diarylmethyl,
comprising the step of reacting a 1-substituted 2-mercapto-5-hydroxymethylimidazole of the formula:
, wherein R is as defined above,
in the presence of a transition metal catalyst and an oxidizing agent in a solvent.
PROCESS FOR PREPARING A 1-SUBSTITUTED 5-HYDROXYMETHYL IMIDAZOLE
申请人:LG Chem Investment, Ltd.
公开号:EP1255737A1
公开(公告)日:2002-11-13
EP1255737A4
申请人:——
公开号:EP1255737A4
公开(公告)日:2003-04-16
Ionic liquid flame retardants
申请人:Xu Yanjie
公开号:US20110039467A1
公开(公告)日:2011-02-17
The present invention relates to the use of ionic liquids as flame retardants. The compounds of the invention may be used as flame retardants in various materials without causing damage to the environment and or health of humans or animals. Ionic liquid flame retardants maybe applied alone or in combination with traditional flame retardants. Ionic liquid flame retardants can be applied to finish textile, plastic, leather, paper, rubber, or as wild fire flame retardants.