Sughrue, Mion, Zinn, Macpeak & Seas
Method for producing 1,4-dihydroxy-2-naphthoic acid
 A method for producing 1,4-dihydroxy-2-naphthoic acid which comprises the steps of: subjecting 1,4-dihydroxynaphthalene into an alkali metal salt formation reaction in an organic medium capable of dissolving 1,4-dihydroxynaphthalene using an alkali metal alcoholate; and subjecting the salt formation reaction mixture to carboxylation using carbon dioxide gas. 
Sumika Fine Chemicals Co., Ltd. Sumitomo Chemical Company, Limited
C
C07C
inventional
Yasuhiro Shinichi Toshio Norio
Nishida Watanabe Nakamatsu Kometani