PROCESS FOR THE PRODUCTION OF 5-OXY-7-OXABICYCLO-[4.1.0]HEPT-3-ENE-3-CARBOXYLIC ACID ESTERS

(19)

(11)

EP 1 245 569 A8

(12)	CORRECTED EUROPEAN PATENT APPLICATION
	published in accordance with Art. 158(3) EPC

(48)	Corrigendum issued on:
	09.04.2003 Bulletin 2003/15

(43)	Date of publication:
	02.10.2002 Bulletin 2002/40

(21)	Application number: 00977960.4

(22)	Date of filing: 27.11.2000

(51)	International Patent Classification (IPC)⁷: C07D 301/02, C07D 303/40, C07C 69/757, C07C 67/31

(86)	International application number:
	PCT/JP0008/348

(87)	International publication number:
	WO 0104/7906 (05.07.2001 Gazette 2001/27)

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

(30)

Priority:

27.12.1999 JP 37140099

(71)	Applicants:
	SAGAMI CHEMICAL RESEARCH CENTER Ayase-shi, Kanagawa 252-1193 (JP) Kuraray Co., Ltd. Okayama 710-8622 (JP)

(72)	Inventors:
	TERASHIMA, Shiro Setagaya-ku, Tokyo 156-0052 (JP) UJITA, Katsuji Kurashiki-shi, Okayama 710-0801 (JP) KUWAYAMA, Tomoya Kurashiki-shi, Okayama 710-0801 (JP) SUGIOKA, Takashi Kurashiki-shi, Okayama 710-0801 (JP) SHIMIZU, Kazuya Kurashiki-shi, Okayama 710-0801 (JP) KANEHIRA, Koichi Kitakanbara-gun, Niigata 959-2653 (JP)

(74)	Representative: von Kreisler, Alek, Dipl.-Chem. et al
	Patentanwälte von Kreisler-Selting-Werner Postfach 10 22 41 50462 Köln 50462 Köln (DE)

(54)	PROCESS FOR THE PRODUCTION OF 5-OXY-7-OXABICYCLO-[4.1.0]HEPT-3-ENE-3-CARBOXYLIC ACID ESTERS

(57) The present invention provides a method of producing 5-oxy-7-oxabicyclo[4.1.0]hept-3-ene-3-carboxylic acid ester economically, industrially advantageously and efficiently in a large amount. The present invention is a method of producing 5-oxy-7-oxabicyclo[4.1.0]hept-3-ene-3-carboxylic acid ester (X), which is shown in the following scheme. wherein each symbol is as defined in the specification.