PROCESS FOR THE CONTINUOUS PRODUCTION OF PSEUDOIONONES

PROCESS FOR THE CONTINUOUS PRODUCTION OF PSEUDOIONONES

1,273,224. Pseudoionones, isomers and derivatives thereof. BADISCHE ANILIN- & SODA-FABRIK A.G. 17 Sept., 1969 [18 Sept., 1968], No. 45738/69. Heading C2C. Compounds of Formulµ Ia, Ib and Ic where R1 and R2 are H or CH 3 and R3 is C 1-4 alkyl are prepared by reacting compounds of Formulµ IIa, IIb...

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Bibliographische Detailangaben
Hauptverfasser: FISCHER R,DT, HOFFMANN W,DT, PASEDACH H,DT
Format: Patent
Sprache:eng
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Zusammenfassung:1,273,224. Pseudoionones, isomers and derivatives thereof. BADISCHE ANILIN- & SODA-FABRIK A.G. 17 Sept., 1969 [18 Sept., 1968], No. 45738/69. Heading C2C. Compounds of Formulµ Ia, Ib and Ic where R1 and R2 are H or CH 3 and R3 is C 1-4 alkyl are prepared by reacting compounds of Formulµ IIa, IIb and IIc with CH 3 COCH(R1)COOR3 at 150-300‹ C. in at least 2 successive reactors, the temperature in the first reactor being 160-190‹ C. and that in the following reactor(s) being in each case from 1-50‹ C. higher than in the preceding reactor and the residence times in the reactors being substantially equal and between 10 minutes and 5 hours. A weak acid catalyst may be used.