The preparation and spectral studies of a series of cyclic β-ketoesters
作者:Sara Jane Rhoads、J.C. Gilbert、A.W. Decora、T.R. Garland、R.J. Spangler、Mary Jane Urbigkit
DOI:10.1016/s0040-4020(01)99237-3
日期:1963.1
their C-methyl derivatives have been prepared and studied in the U.V. and I.R. spectral regions. The enolizable β-ketoesters show a high intensity K band in the 255–263 mμ region associated with the chelated enolic species and two pairs of bands in the 6 μ double bond stretching region which correspond to the structural features of the keto and enol tautomers. The non-enolizable β-ketoesters show only a
Carbocyclic ring expansion reactions via free radical pathways - part III
作者:Jack E. Baldwin、Robert M. Adlington、Rajinder Singh
DOI:10.1016/0040-4020(92)85014-6
日期:1992.1
The freeradical ring expansion methodology recently described1, leading to the formation of medium sized ring ketones from cyclohexanone precursors has been applied to different side chains and ring sizes. In addition precursors based on lactone rings have been prepared and subjected to radical forming reaction conditions.
申请人:National Institute of Advanced Industrial Science and Technology
公开号:EP1544190A1
公开(公告)日:2005-06-22
The present invention provides a safe, convenient and efficient method for producing carboxylic acid by a reaction of alicyclic alcohol with an aqueous hydrogen peroxide to thereby obtain carboxylic acid in high yield from alicyclic alcohol or alicyclic ketone under mild reaction conditions, wherein the reaction operation is simple and easy, a step for removing solvent after completion of the reaction is not necessary and influence and toxicity upon the environment and human body are markedly small. In order to provide it, an oily alicyclic alcohol is allowed to react with an aqueous hydrogen peroxide in the presence of a catalyst containing a metal compound belonging to Group 6 of the Periodic Table in a heterogeneous solution system.
The present invention provides a safe, convenient and efficient method for producing carboxylic acid by a reaction of alicyclic alcohol with an aqueous hydrogen peroxide to thereby obtain carboxylic acid in high yield from alicyclic alcohol or alicyclic ketone under mild reaction conditions, wherein the reaction operation is simple and easy, a step for removing solvent after completion of the reaction is not necessary and influence and toxicity upon the environment and human body are markedly small. In order to provide it, an oily alicyclic alcohol is allowed to react with an aqueous hydrogen peroxide in the presence of a catalyst containing a metal compound belonging to Group 6 of the Periodic Table in a heterogeneous solution system.