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Title:
METHOD FOR PRODUCING 1,2,3,4-CYCLOBUTANE TETRACARBOXYLIC ACID
Document Type and Number:
Japanese Patent JP2008273876
Kind Code:
A
Abstract:

To provide a method for producing 1,2,3,4-cyclobutane tetracarboxylic acid in a high yield, with an easy production process, while dramatically reducing industrial waste materials.

This method of production comprises the following processes I to III. The method for producing the 1,2,3,4-cyclobutane tetracarboxylic acid is characterized by performing the following processes I to III. The process I: a process of obtaining a maleic acid dihemiacetal ester by protecting with an -unsaturated ether. The process II: a process of obtaining 1,2,3,4-cyclobutane tetracarboxylic acid tetrahemiacetal ester by the photocyclization dimerization of the maleic acid dihemiacetal ester obtained in the process I. The process III: a process of obtaining 1,2,3,4-cyclobutane tetracarboxylic acid by deprotecting the -unsaturated ether from the 1,2,3,4-cyclobutane tetracarboxylic acid tetrahemiacetal ester obtained in the process II.


Inventors:
Saito, Takashi
Nishimura, Naoya
Application Number:
JP2007000119588
Publication Date:
November 13, 2008
Filing Date:
April 27, 2007
Export Citation:
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Assignee:
NOF CORP
International Classes:
C07C51/09; C07C61/04
Domestic Patent References:
JP2006117673A
JPH04279609A
JPH06135877A
JPH0261956B2
JP2003192685A
JP2007238460A
JP2008100949A