公开(公告)号：JP2000034589A

公开(公告)日：2000-02-02

申请号：JP17463799

申请日：1999-06-21

Applicant: BASF AG

Inventor： PUETTER HERMANN DR ,  STECKHAN EBERHARD ,  KROENER LARS ,  JOERISSEN JAKOB DR ,  HOORMANN DIRK ,  MERK CLAUDIA DR

IPC: C25B3/00 ,  C25B3/02

Abstract: PROBLEM TO BE SOLVED: To provide the electrolysis, in which a solid polymer electrolyte technology is applied and the current density can be maintained in a constant value for a relatively long period of time without increasing cell voltage. SOLUTION: The electrochemical reaction is conducted in an electrolytic cell which has a solid electrolyte comprising one or more layers of ion exchange membranes superposed in the up-and-down direction and has a cathode and an anode which are brought into contact directly with the solid electrolyte, using an electrolytic solution, which is an organic solution substantially containing no electrically conductive salt, at the temp. of the boiling point of the electrolytic solution or a temp. lower by 0-5 deg.C than the boiling point.

公开(公告)号：JP2000034591A

公开(公告)日：2000-02-02

申请号：JP17463699

申请日：1999-06-21

Applicant: BASF AG

Inventor： PUETTER HERMANN DR ,  STECKHAN EBERHARD ,  KROENER LARS ,  JOERISSEN JAKOB DR ,  HOORMANN DIRK ,  MERK CLAUDIA DR

IPC: C25B3/02

Abstract: PROBLEM TO BE SOLVED: To decrease the production of the secondary product and to isolate a desired product from the reaction mixture at a low cost by using a solid electrolyte and an electrolytic liquid having a specified compsn. to carry out oxidation. SOLUTION: The solid electrolyte consists of a cation exchange membrane or lots of layers of the membranes. The electrolytic liquid is an org. soln. containing no supporting electrolyte and contains, by wt.%, 10 to 90% of methanol, 1 to 50% of a compd. selected from compds. expressed by formula I and formula II, 1 to 50% of 1-15C carboxamides which may be N-alkylated, and 0 to 30% of inert solvent. In the formulae I, II, R' independently represents hydrogen, 2-4C alkyl groups or the like, A independently represents methylene or the like, B independently represents H or O-CH3, m is 0 to 3, n is 1 to 3, X and Y are the same as A and B, respectively, but are selected in such a manner that the oxidation state of the compd. of formula II is lower by at least 1 than the oxidation state of the compd. of formula I.

公开(公告)号：JP2000034590A

公开(公告)日：2000-02-02

申请号：JP17468899

申请日：1999-06-21

Applicant: BASF AG

Inventor： PUETTER HERMANN DR ,  STECKHAN EBERHARD ,  KROENER LARS ,  JOERISSEN JAKOB DR ,  HOORMANN DIRK ,  MERK CLAUDIA DR

IPC: C25B3/00 ,  C25B3/02

Abstract: PROBLEM TO BE SOLVED: To provide a method for electrochemical methoxylation of a methine, methylene or methyl group of aliphatic or alicyclic mono-ether or di-ether. SOLUTION: The electrochemical methoxylation of a methine, methylene or methyl group present at α-position with respect to an ether-oxygen atom is conducted in an electrolytic cell, which has a solid electrolyte comprising a cation exchange membrane or several cation exchange membranes layered in the up-and-down direction and has a cathode and an anode which are brought into contact directly with the solid electrolyte, using, as an electrolytic solution, an organic solution containing, by weight, a) 10-90% methanol, b) 1-50% compound selected from starting ethers or methoxylated ethers and c) 0-30% other inert solvent and substantially containing no supporting electrolyte.

公开(公告)号：DE19827321A1

公开(公告)日：1999-12-23

申请号：DE19827321

申请日：1998-06-19

Applicant: BASF AG

Inventor： MERK CLAUDIA ,  PUETTER HERMANN ,  STECKHAN EBERHARD ,  KROENER LARS ,  JOERISSEN JAKOB ,  HOORMANN DIRK

IPC: C25B3/23 ,  C25B3/02 ,  C07C43/30 ,  C07C43/205 ,  C07C47/52 ,  C07C49/76

Abstract: Production of aromatic aldehyde, ether, acetal and ester compounds (I) by electrochemical oxidation is carried out in an electrolytic cell with a solid state electrolyte, consisting of one or several superimposed layers of cation exchange membrane, a cathode and an anode in direct contact with this and an electrolysis liquid. Production of aromatic aldehyde, ether, acetal and ester compounds of formula (I) with an oxidation number of 1-9 from aromatic compounds of formula (II) with an oxidation number NOTLESS 1 lower by electrochemical oxidation is carried out in an electrolytic cell with a solid state electrolyte, consisting of one or several superimposed layers of cation exchange membrane, a cathode and an anode in direct contact with this and an electrolysis liquid. The liquid is an organic solution, free from conducting electrolyte, containing 10-90 wt. % methanol, 1-50 wt. % compounds selected from (I) and (II), including NOTLESS 1 mol. % (II), 1-50 wt. % optionally N-alkylated 1-15 carbon (C) carbonamide or 3-15 C N-alkylated urea and 0-30 wt. % other inert solvent. R = hydrogen (H), 2-4 C alkyl, 1-4 C alkoxy or halogen; A, X = methylene, carbonyl or methoxymethylene (-CH(OCH3)-); B, Y = H or methoxy (OCH3); m = 0-3; n = 1-3. The oxidation numbers of (I) and (II) are obtained by adding the oxidation number for each group A and B or X and Y, which is 0 if A is methylene, 1 if A is methoxymethylene and 2 if A is carbonyl, 0 if B is H and 1 if B is methoxy.

公开(公告)号：DE19827325A1

公开(公告)日：1999-12-23

申请号：DE19827325

申请日：1998-06-19

Applicant: BASF AG

Inventor： MERK CLAUDIA ,  PUETTER HERMANN ,  STECKHAN EBERHARD ,  KROENER LARS ,  JOERISSEN JAKOB ,  HOORMANN DIRK

IPC: C25B3/23 ,  C25B3/00 ,  C25B3/02 ,  C25B3/10 ,  C25B15/00 ,  C25B13/04 ,  C25B11/04

Abstract: The electrochemical reaction of organic substrates is carried out in a cell with a solid electrolyte (ion exchange membrane) in direct contact with cathode and anode, using an electrolysis liquid comprising an organic solution which is essentially free from conductive salts and operating at the b.pt. of this liquid or at up to 5 degrees C below the b.pt.

公开(公告)号：DE19827322A1

公开(公告)日：1999-12-23

申请号：DE19827322

申请日：1998-06-19

Applicant: BASF AG

Inventor： MERK CLAUDIA ,  PUETTER HERMANN ,  STECKHAN EBERHARD ,  KROENER LARS ,  JOERISSEN JAKOB ,  HOORMANN DIRK

IPC: C25B3/23 ,  C25B3/02 ,  C07B41/04 ,  C07C43/10 ,  C07D309/12 ,  C07D319/12

Abstract: The electrochemical methoxylation of aliphatic or alicyclic mono- or di-ethers in the alpha -position is carried out by solid electrolyte technology using as electrolysis liquid an organic solution with no conductive salts, containing methanol, starting ether (I) (at least 1 mol.%) and optionally inert solvent. The methine, methylene or methyl groups in the alpha -position to an ether oxygen atom in aliphatic or alicyclic mono- or di-ethers (I) are electrochemically methoxylated to give compounds (II) in which at least one hydrogen atom in the group is substituted with methoxy. The process is carried out in a cell with a solid electrolyte consisting of cation exchange membrane(s) in direct contact with a cathode and anode, using as electrolysis liquid an organic solution with essentially no conductive electrolytes, containing: (a) 10-90 wt.% methanol; (b) 1-50 wt.% compounds selected from ethers (I) and (II) (the content of (I) being at least 1 mol.%); and (c) 0-30 wt.% inert solvent.