PREPARATION OF 6-CARBOXY-3,4-DIHYDRO-2H-PYRAN - Patent 0159993

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EP 0 159 993 A1

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(43)	Date of publication:
	06.11.1985 Bulletin 1985/45

(21)	Application number: 84900419.0

(22)	Date of filing: 15.11.1983

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International Patent Classification (IPC):

C07D 309/ 00^{( . )}
C07D 309/ 28^{( . )}

B01J 31/ 00^{( . )}

(86)	International application number:
	PCT/US1983/001799

(87)	International publication number:
	WO 1985/001731 (25.04.1985 Gazette 1985/10)

(84)	Designated Contracting States:
	AT BE CH DE FR GB LI LU NL SE

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Priority:

21.10.1983 US 19830544399

(71)	Applicant: ETHYL CORPORATION
	Baton Rouge Louisiana 70801 (US)

(72)	Inventors:
	WOLFRAM, Joachim, Wilhelm Baton Rouge, LA 70810 (US) LEE, John Y. Baton Rouge, Louisiana (US)

(74)	Representative: Baillie, Iain Cameron, et al
	c/o Ladas & Parry Altheimer Eck 2 D-80331 München D-80331 München (DE)

(54)	PREPARATION OF 6-CARBOXY-3,4-DIHYDRO-2H-PYRAN