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(11)

EP 0 496 831 A1

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(43) Date of publication: 05.08.1992 Bulletin 1992/32 (21) Application number: 90917169.0 (22) Date of filing: 16.10.1990

(51) International Patent Classification (IPC):  B01J 29/ 04( . ) B01J 29/ 85( . ) C07B 61/ 00( . ) C07C 2/ 86( . ) B01J 29/ 70( . ) B01J 29/ 90( . ) C07C 2/ 66( . ) C07C 15/ 24( . ) (86) International application number: PCT/US1990/005916 (87) International publication number: WO 1991/005751 (02.05.1991 Gazette 1991/10)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU NL SE (30) Priority: 17.10.1989 US 19890422784 (71) Applicant: CATALYTICA INC. Mountain View California 94043 (US)	(72) Inventors: FELLMANN, Jere, D. Livermore, CA 94550 (US) MASSIANI, Pascale F-34075 Montpellier Cédex 02 (FR) EXNER, Herbert Mountain View, CA 94043 (US) WENTRCEK, Paul, R. Redwood City, CA 94063 (US) SAXTON, Robert, J. West Chester, PA 19380 (US) (74) Representative: Field, Roger Norton (GB), et al  Carpmaels & Ransford 43 Bloomsbury Square GB-London WC1A 2RA GB-London WC1A 2RA (GB)