公开(公告)号：DE3163996D1

公开(公告)日：1984-07-12

申请号：DE3163996

申请日：1981-09-19

Applicant: DEGUSSA

Inventor： KLEEMANN AXEL DR DIPL CHEM ,  SAMSON MARC DR

IPC: C07D209/20 ,  C07D317/30 ,  C07D319/06 ,  C07D405/06

公开(公告)号：DE3375931D1

公开(公告)日：1988-04-14

申请号：DE3375931

申请日：1983-12-16

Applicant: DEGUSSA

Inventor： KARRENBAUER MICHAEL DR DIPL CH ,  KLEEMANN AXEL DR DIPL CHEM ,  LEUCHTENBERGER WOLFGANG DR DIP ,  MOERCK RUDI DR DIPL CHEM

IPC: C07C59/245 ,  C07C51/00 ,  C07C51/42 ,  C07C67/00 ,  C12P7/46

Abstract: The reaction mixture obtained in the enzymatic reaction of fumaric acid to form L-malic acid contains the L-malic acid and unreacted fumaric acid as their salts. To recover pure solutions of L-malic acid the reaction mixture is treated at 50 DEG to 150 DEG C. with cation exchangers. The eluate after concentration to 30 to 80 weight % content of L-malic acid is filtered. The pure L-malic acid is recovered by evaporating the solutions, in a given case after treatment with activated carbon.

公开(公告)号：DE3370615D1

公开(公告)日：1987-05-07

申请号：DE3370615

申请日：1983-09-10

Applicant: DEGUSSA

Inventor： KLEEMANN AXEL DR DIPL CHEM ,  DELLER KLAUS DR DIPL ING ,  DRAUZ KARLHEINZ DR DIPL CHEM ,  LEHMANN BERND DR DIPL CHEM

IPC: C07C43/13 ,  B01J23/00 ,  B01J31/00 ,  C07B61/00 ,  C07C27/00 ,  C07C29/00 ,  C07C31/20 ,  C07C33/26 ,  C07C41/00 ,  C07C67/00 ,  C07D307/42

公开(公告)号：DE3360020D1

公开(公告)日：1985-01-17

申请号：DE3360020

申请日：1983-02-15

Applicant: DEGUSSA

Inventor： SCHWARZE WERNER DR DIPL CHEM ,  KLEEMANN AXEL DR DIPL CHEM

IPC: A01N31/04 ,  C07C27/00 ,  C07C29/36 ,  C07C29/40 ,  C07C33/34 ,  C07C33/50 ,  C07C67/00

Abstract: There are prepared compounds of the general formula (I) where R is methyl or ethyl and R1 is halogen or hydrogen. The compounds are useful as fungicides, especially against Piricularia oryzae on rice.

公开(公告)号：DE3165258D1

公开(公告)日：1984-09-06

申请号：DE3165258

申请日：1981-10-25

Applicant: DEGUSSA

Inventor： KLEEMANN AXEL DR DIPL CHEM ,  LEHMANN BERND DR DIPL CHEM ,  SCHALKE PETER DR DIPL CHEM

IPC: C07C69/06 ,  B01J31/00 ,  B01J31/02 ,  C07B61/00 ,  C07C67/00 ,  C07C67/22 ,  C07C209/00 ,  C07C209/62 ,  C07C211/03 ,  C07C211/35 ,  C07C87/02 ,  C07C85/20

公开(公告)号：DE3163973D1

公开(公告)日：1984-07-12

申请号：DE3163973

申请日：1981-07-04

Applicant: DEGUSSA

Inventor： KLEEMANN AXEL DR DIPL CHEM ,  MARTENS JURGEN DR DIPL CHEM ,  BETHGE HORST ,  SCHERBERICH PAUL DR DIPL CHEM

IPC: C07D277/10 ,  C07D277/60

Abstract: There are produced thiazoline-(3) compounds which optionally are substituted or unsubstituted in the 2 and/or 5 positions by reaction of oxo compounds with a metal sulfides, ammonia and oxo compounds which are substituted by halogen in the position adjacent to the oxo group. In this process a mixture of oxo compounds, metal sulfides and ammonia is present and the halogen substituted oxo compound is introduced into the mixture. By using in this manner of mixing, high yields are obtained in a relatively short period of time.

公开(公告)号：CH627437A5

公开(公告)日：1982-01-15

申请号：CH690377

申请日：1977-06-03

Applicant: DEGUSSA

Inventor： KLEEMANN AXEL DR DIPL CHEM ,  KLENK HERBERT DR DIPL CHEM ,  SCHWARZE WERNER DR DIPL CHEM

IPC: C07C231/06 ,  C07C20060101 ,  C07C67/00 ,  C07C231/00 ,  C07C235/72 ,  C07C235/80 ,  C07C102/08 ,  C07C103/127

公开(公告)号：DE3469718D1

公开(公告)日：1988-04-14

申请号：DE3469718

申请日：1984-09-06

Applicant: DEGUSSA

Inventor： DRAUZ KARLHEINZ DR DIPL CHEM ,  KLEEMANN AXEL DR DIPL CHEM

IPC: C07C37/58 ,  B01J27/00 ,  C01B15/017 ,  C07C27/00 ,  C07C37/60 ,  C07C39/08 ,  C07C67/00

Abstract: The production of solutions of hydrogen peroxide in phenol or its derivatives, e.g. hydrocarbyl substituted phenols, halo substituted phenols or phenol ethers, is carried out in a single step. Practically no loss of hydrogen peroxide occurs since a total distillation of hydrogen peroxide together with phenol or phenol derivative is avoided. Simultaneously the solutions obtained are practically free from water. The mixture of phenol or phenol derivative and aqueous hydrogen peroxide is treated with a material that boils below the boiling point of hydrogen peroxide, phenol or phenol derivative or forms an azeotrope with water that boils below the boiling point of hydrogen peroxide, phenol or phenol derivative and the water removed as an azeotrope. The solution of hydrogen peroxide in phenol or phenol derivative which remains behind is suitable for carrying out oxidation reactions and above all, also for hydroxylation reactions. The latter as especially advantageously carried out in the presence of sulfur-, selenium-, or tellurium oxide.

公开(公告)号：DE3466384D1

公开(公告)日：1987-10-29

申请号：DE3466384

申请日：1984-02-06

Applicant: DEGUSSA

Inventor： DRAUZ KARLHEINZ DR DIPL CHEM ,  KLEEMANN AXEL DR DIPL CHEM

IPC: C07C43/23 ,  C07C27/00 ,  C07C37/60 ,  C07C39/08 ,  C07C39/15 ,  C07C41/00 ,  C07C41/26 ,  C07C43/20 ,  C07C67/00

公开(公告)号：DE3363845D1

公开(公告)日：1986-07-10

申请号：DE3363845

申请日：1983-01-25

Applicant: DEGUSSA

Inventor： KLEEMANN AXEL DR DIPL CHEM ,  KLENK HERBERT DR DIPL CHEM ,  SCHULZ WOLFGANG DR DIPL CHEM

IPC: C07C337/06 ,  C01B21/093 ,  C01C3/20 ,  C07C67/00 ,  C07C325/00 ,  C07C159/00

Abstract: To produce thiosemicarbazide hydrazine is reacted with hydrogen cyanide and sulfur to form hydrazine thiocyanate, and this is then converted into the thiosemicarbazide at an elevated temperature. Advantageously, the reaction is carried out in a polar solvent.