公开(公告)号：DE3866661D1

公开(公告)日：1992-01-16

申请号：DE3866661

申请日：1988-09-17

Applicant: BASF AG

Inventor： DECKER MARTIN DR ,  FRANZISCHKA WOLFGANG DR ,  WACHE HARRO DR ,  FRANZ DIETER DR

IPC: C07C329/00 ,  C07C329/02

Abstract: Prodn. of chlorothioformate esters of formula R-S-CO-Cl (I) is effected by reacting a thiol of formula R-SH (II) with CoCl2 in the presence of a catalytic amt. of a cyclic tert. amine (III), where R = an organic gp. (III) is a mono- or dialkylated 5- or 6-membered aromatic or nonaromatic heterocyclic cpd. contg. 1 or 2 tert. N atoms, where the alkyl gps. contain a total of 5-20 C atoms.

公开(公告)号：DE3825119A1

公开(公告)日：1990-02-15

申请号：DE3825119

申请日：1988-07-23

Applicant: BASF AG

Inventor： MERGER FRANZ DR ,  HARDER WOLFGANG DR ,  HETTINGER PETER DR ,  PRIESTER CLAUS-ULRICH DR ,  FRANZ DIETER DR ,  VOGES DIETER DR

IPC: C07C253/18 ,  C07C255/12 ,  C07C255/13 ,  C07C255/24

公开(公告)号：DE59405738D1

公开(公告)日：1998-05-28

申请号：DE59405738

申请日：1994-01-07

Applicant: BASF AG

Inventor： PFAB PETER DR ,  WAHL PETER DR ,  FRANZ DIETER DR

IPC: C07D207/32 ,  C07D207/323

Abstract: Process for the purification of crude pyrroles obtained in the preparation of pyrroles of the general formula I in which R is hydrogen or a C1-C6-alkyl radical, characterised in that the mixture which contains the crude pyrrole is treated with an acid or an activated carboxylic acid derivative and the pyrrole is removed from the mixture by distillation at reduced pressure and a bottom temperature of up to 160@C.

公开(公告)号：DE3875547D1

公开(公告)日：1992-12-03

申请号：DE3875547

申请日：1988-08-02

Applicant: BASF AG

Inventor： MUELLER HERBERT DR ,  FRANZ DIETER DR

IPC: C07D295/02 ,  C07D295/023

Abstract: Process is for prodn. of N-ethylpiperazine (I) by distn. from mixts. contg. (a) 30-90 kg. (I), (b) 7-40 kg. N,N'-diethylpiperazine (II), (c) 3-20 kg. piperazine, (d) 0-30 kg. ethanol, (e) 0-40 kg. water and (f) 0-5 kg. other impurities, per 100 kg. mixt.; distn. is carried out in the presence of x:y+e is 3b to 12b water (where y is the amt. of water to be added, if required, to fulfill this condition) and the following fractions are sepd. successively as head prods. (1) water, EtOH, (II) and volatile impurities (III), (2) water, if present in excess, (3) piperazine and (4) pure (I).

公开(公告)号：DE3763421D1

公开(公告)日：1990-08-02

申请号：DE3763421

申请日：1987-03-25

Applicant: BASF AG

Inventor： KUMMER RUDOLF DR ,  FRANZ DIETER DR ,  RATH HANS PETER DR

IPC: C10L1/22 ,  C08F8/00 ,  C08F8/30 ,  C08F8/32 ,  C10L1/222 ,  C10L1/234 ,  C10L1/2383 ,  C10L1/2387 ,  C10L10/08 ,  C10M133/00 ,  C10M133/04 ,  C10M133/38 ,  C10M133/52 ,  C10M133/54 ,  C10M133/58 ,  C10M149/12 ,  C10N30/04 ,  C10N40/00 ,  C10N40/25 ,  C10N70/00

公开(公告)号：DE3731812A1

公开(公告)日：1989-03-30

申请号：DE3731812

申请日：1987-09-22

Applicant: BASF AG

Inventor： DECKER MARTIN DR ,  FRANZISCHKA WOLFGANG DR ,  WACHE HARRO DR ,  FRANZ DIETER DR

IPC: C07C329/00 ,  C07C329/02

公开(公告)号：DE4304002A1

公开(公告)日：1994-08-18

申请号：DE4304002

申请日：1993-02-11

Applicant: BASF AG

Inventor： MERGER FRANZ DR ,  BRUDERMUELLER MARTIN DR ,  PRIESTER CLAUS-ULRICH DR ,  WITZEL TOM DR ,  VOIT GUIDO DR ,  HARDER WOLFGANG DR ,  FRIEDRICH WOLFGANG ,  FRANZ DIETER DR

IPC: C07C253/30 ,  C07C255/12 ,  C07C255/24

公开(公告)号：DE58902281D1

公开(公告)日：1992-10-22

申请号：DE58902281

申请日：1989-07-01

Applicant: BASF AG

Inventor： MERGER FRANZ DR ,  HARDER WOLFGANG DR ,  HETTINGER PETER DR ,  PRIESTER CLAUS-ULRICH DR ,  FRANZ DIETER DR ,  VOGES DIETER DR

IPC: C07C253/18 ,  C07C255/12 ,  C07C255/13 ,  C07C255/24

公开(公告)号：AT70049T

公开(公告)日：1991-12-15

申请号：AT88115298

申请日：1988-09-17

Applicant: BASF AG

Inventor： DECKER MARTIN DR ,  FRANZISCHKA WOLFGANG DR ,  WACHE HARRO DR ,  FRANZ DIETER DR

IPC: C07C329/00 ,  C07C329/02

公开(公告)号：DE3725925A1

公开(公告)日：1989-02-16

申请号：DE3725925

申请日：1987-08-05

Applicant: BASF AG

Inventor： MUELLER HERBERT DR ,  FRANZ DIETER DR

IPC: C07D295/02 ,  C07D295/023

Abstract: N-Ethylpiperazine is isolated by distillation from a mixture consisting per 100 kg of a=from 30 to 90 kg of N-ethylpiperazine b=from 7 to 40 kg of N,N'-diethylpiperazine c=from 3 to 20 kg of piperazine d=from 0 to 30 kg of ethanol e=from 0 to 40 kg of water and f=from 0 to 5 kg of concomitants, by performing the distillation in the presence of x=y+e= from 3b to 12b of water, y being the quantity of water which has to be added, if necessary, to meet this condition, and successively separating from this mixture the fractions 1. water, ethanol, N,N'-diethylpiperazine and other highly volatile concomitants, 2. water, if present in excess, 3. piperzine and 4. pure N-ethylpiperazine as overhead products.