公开(公告)号：DE3869222D1

公开(公告)日：1992-04-23

申请号：DE3869222

申请日：1988-06-08

Applicant: BASF AG

Inventor： NAEUMANN FRITZ DR ,  HOELDERICH WOLFGANG DR ,  MERGER FRANZ DR

IPC: B01J29/84 ,  B01J27/18 ,  B01J27/182 ,  B01J29/06 ,  B01J29/42 ,  B01J29/82 ,  B01J29/85 ,  B01J29/86 ,  B01J29/88 ,  B01J29/89 ,  C07B61/00 ,  C07C67/293 ,  C07C67/333 ,  C07C69/533

Abstract: Pentenate esters (I) prodn. involves heating formylvalerate esters (II) to 50-400 deg. C in the presence of zeolites (III) or phosphate(s) (IV) selected from Al, Si-Al, B-Al, Si-Fe, -Al, Ce, Zr, B, Fe and Sr phosphate. Pref. heating is carried out in the presence of (gas contg.) O2 and opt. an inert diluent. (III) or (IV) contains gp. VIII metal(s), pref. one gp. VIII noble metal(s) and opt. Fe-gp. metal(s) and opt. also sub-gp. I-VII element(s). (III) pref. have pentasil structure and esp. are Al, B or Fe silicate zeolites; or are Al silicate zeolites with faujasite structure. (IV) is Al, Si-Al, Fe-Al or B-Al phosphate.

公开(公告)号：DE3910220A1

公开(公告)日：1990-10-04

申请号：DE3910220

申请日：1989-03-30

Applicant: BASF AG

Inventor： NAEUMANN FRITZ DR ,  HICKMANN ECKHARD DR

IPC: C07C45/51 ,  C07C49/213 ,  C07C49/223 ,  C07C49/255 ,  C07D317/54

Abstract: Benzyl ketones of the general formula I (I) where R1 is C1-C8-alkyl which is unsubstituted or substituted by cycloalkyl or aryl and R2 and R3 are each halogen, C1-C4-alkyl, hydroxyl, C1-C4-alkoxy or C2-C4-methylenedioxy, are prepared by a process in which a glycol monoether of the general formula II (II) where R1, R2 and R3 have the abovementioned meanings and R4 is C1-C8-alkyl, is converted in the presence of silica, a phosphate or a zeolite at from 50 DEG to 500 DEG C. and under from 0.01 to 50 bar.

公开(公告)号：DE3802980A1

公开(公告)日：1989-08-10

申请号：DE3802980

申请日：1988-02-02

Applicant: BASF AG

Inventor： NAEUMANN FRITZ DR ,  HOELDERICH WOLFGANG DR ,  SCHWARZMANN MATTHIAS DR

IPC: C07D315/00

Abstract: Process for the preparation of 5-methylbutyrolactone from pentenoic esters by cyclising these esters with water at temperatures from 50 to 350@C on zeolite and/or phosphate catalysts, if appropriate in the presence of a diluent.

公开(公告)号：DE3719935A1

公开(公告)日：1988-12-29

申请号：DE3719935

申请日：1987-06-15

Applicant: BASF AG

Inventor： NAEUMANN FRITZ DR ,  HOELDERICH WOLFGANG DR ,  MERGER FRANZ DR

IPC: B01J29/84 ,  B01J27/18 ,  B01J27/182 ,  B01J29/06 ,  B01J29/42 ,  B01J29/82 ,  B01J29/85 ,  B01J29/86 ,  B01J29/88 ,  B01J29/89 ,  C07B61/00 ,  C07C67/293 ,  C07C67/333 ,  C07C69/533

公开(公告)号：DE3638010A1

公开(公告)日：1988-05-11

申请号：DE3638010

申请日：1986-11-07

Applicant: BASF AG

Inventor： HOELDERICH WOLFGANG DR ,  NAEUMANN FRITZ DR ,  FISCHER ROLF DR

IPC: B01J27/16 ,  B01J27/00 ,  B01J29/00 ,  B01J29/04 ,  B01J29/06 ,  B01J29/08 ,  B01J29/82 ,  B01J29/83 ,  C07B61/00 ,  C07C67/03 ,  C07C67/327 ,  C07C69/533

Abstract: Alkenecarboxylic acid esters of the formula I … … in which R1 signifies an alkyl radical having 1 to 6 carbon atoms, R2 represents a hydrogen atom or an alkyl radical having 1 to 4 carbon atoms, where the substituents can be identical or different, and n represents 1, 2 or 3, are prepared by reacting lactones of the formula II … … in which R2 has the same meaning as in formula I, R3 signifies a hydrogen atom or a methyl group and m represents 0, 1 or 2, with the proviso that the difference between n and m in the case in which R3 denotes hydrogen has the value 1 and in the case in which R3 denotes methyl has the value 2, with alkanols having 1 to 6 carbon atoms at a temperature of 50 to 450 DEG C in the presence of zeolites and/or phosphates as catalysts.

公开(公告)号：ES2030789T5

公开(公告)日：1999-03-16

申请号：ES88109090

申请日：1988-06-08

Applicant: BASF AG

Inventor： NAEUMANN FRITZ DR ,  HOELDERICH WOLFGANG DR ,  MERGER FRANZ DR

IPC: B01J29/84 ,  B01J27/18 ,  B01J27/182 ,  B01J29/06 ,  B01J29/42 ,  B01J29/82 ,  B01J29/85 ,  B01J29/86 ,  B01J29/88 ,  B01J29/89 ,  C07B61/00 ,  C07C67/293 ,  C07C67/333 ,  C07C69/533

公开(公告)号：DE3773116D1

公开(公告)日：1991-10-24

申请号：DE3773116

申请日：1987-10-30

Applicant: BASF AG

Inventor： HOELDERICH WOLFGANG DR ,  NAEUMANN FRITZ DR ,  FISCHER ROLF DR

IPC: B01J27/16 ,  B01J27/00 ,  B01J29/00 ,  B01J29/04 ,  B01J29/06 ,  B01J29/08 ,  B01J29/82 ,  B01J29/83 ,  C07B61/00 ,  C07C67/03 ,  C07C67/327 ,  C07C69/533

Abstract: Prodn. of alkenoate esters of formula (I) is effected by reacting a lactone of formula (II) with a 1-6C alkanol (III) at 50-450 deg. C in the presence of a zeolite and/or phosphate catalyst: R1 = 1-6C alkyl; R2 = H or 1-4C alkyl (same or different); R3 = H or Me; n = 1-3; m = 0-2; provided that n-m = 1 when R3 = H and n-m = 2 when R3 = Me. Pref. the reaction is effected in the gas phase at 200-350 deg. C using a (II):(III) molar ratio of 1:0.5-10. Pref. the catalyst is (a) a pentasil-type boro-, ferro- or aluminosilicate or faujasite-type aluminosilicate zeolite, opt. doped with alkali(ne earth), transition or rate earth metals, or (b) a zeolite-like aluminophosphate, silicoaluminophosphate, silicoferroaluminophosphate or ferroaluminophosphate.

公开(公告)号：DE3927916A1

公开(公告)日：1991-02-28

申请号：DE3927916

申请日：1989-08-24

Applicant: BASF AG

Inventor： STECK WERNER DR ,  RUST HARALD ,  LERMER HELMUT DR ,  NAEUMANN FRITZ DR

IPC: C07C253/34 ,  C07C255/50

Abstract: A process for the separation of ortho-, meta- and para-tolunitrile from ternary mixtures of isomers entails removing ortho-tolunitrile from these mixtures by distillation under pressures of from 102 and 105 Pa and with a reflux ratio of from 1:1 to 200:1, and distilling the remaining binary mixture of meta- and para-tolunitrile to concentrate to more than 75 mol-% para-tolunitrile, and freezing out the paratolunitrile at below 26 DEG C., and a process for the preparation of suitable ternary mixtures of isomers entails isomerization of pure ortho-, meta- or para-tolunitrile or mixtures thereof at from 380 DEG to 580 DEG C. on zeolite catalysts.