Process for Production of Carboxylic Acid Ester or Ether Compound
申请人:Choi Jun-Chul
公开号:US20090012324A1
公开(公告)日:2009-01-08
Disclosed is a process for production of a carboxylic acid ester from a carboxylic acid and an olefin or production of an ether compound from an alcohol and an olefin at low cost and with high yield in an industrially advantageous manner. The process comprises the step of reacting a carboxylic acid with an olefin to yield a corresponding carboxylic acid ester or reacting an alcohol with an olefin to yield a corresponding ether compound. In the process, a catalyst comprising a combination of (i) at least one metal compound selected from an iron compound, a cobalt compound and a nickel compound and (ii) an acidic compound is used.
Phenoxycarbonylation of various allylic carbonates under various conditions in tetrahydrofuran in described. The nature and ratio of the products formed are dependent on the presence of water, carbon monoxide pressure and addition of various inorganic halides. The formation of a product arising from dimerization of the allylic carbonate is discussed.
Nickel(0)-catalysed asymmetric cross-coupling reactions of allylic compounds with Grignard reagents using optically active oxazolinylferrocenylphosphines as ligands
作者:Kang-Go Chung、Yoshihiro Miyake、Sakae Uemura
DOI:10.1039/b002547j
日期:——
Opticallyactive oxazolinylferrocenylphosphines work effectively as chiral P–N ligands in nickel(0)-catalysed cross-coupling reactions of allylic compounds with Grignardreagents, which are known to behave as “hard” nucleophiles, to give the expected coupling products in high yields and high enantioselectivities (30–100% chemical yield and 14–95% ee). These ligands are revealed to be more effective
Rearrangement reactions of cycloalkenyl phenol and naphthyl ethers and the acid-catalyzed cyclization of the resulting product were investigated. Claisen rearrangement afforded 2-substituted phenol and naphthol derivatives. Combined Claisen and Cope rearrangement resulted in the formation of 4-substituted phenol and naphthol derivatives. In the case of cycloocthylphenyl ether the consecutive Claisen