公开(公告)号：AT336478T

公开(公告)日：2006-09-15

申请号：AT03785691

申请日：2003-12-01

Applicant: BASF AG

Inventor： MAYWALD VOLKER ,  HOFFMANN NICO ,  KEIL MICHAEL ,  VOGELBACHER UWE JOSEF ,  WEVERS JAN HENDRIK

IPC: C07C45/46 ,  C07C45/81 ,  C07C51/363 ,  C07C51/60 ,  C07C49/84

Abstract: A process for preparing benzophenones of the formula I, where X may be chlorine, hydroxyl, methoxy or C 1 -C 6 -alkylcarbonyloxy, and Y may be chlorine or bromine, by reacting an acid chloride of the formula II where X and Y are as defined above with 3,4,5-trimethoxytoluene, which comprises carrying out the reaction in the presence of a) an aromatic hydrocarbon as a diluent and b) from 0.01 to 0.2 mol % of an iron catalyst, based on the acid chloride, c) at a temperature between 60° C. and the boiling point of the particular diluent.

公开(公告)号：PL377943A1

公开(公告)日：2006-02-20

申请号：PL37794303

申请日：2003-12-01

Applicant: BASF AG

Inventor： MAYWALD VOLKER ,  HOFFMANN NICO ,  KEIL MICHAEL ,  VOGELBACHER UWE JOSEF ,  WEVERS JAN HENDRIK

IPC: C07C45/46 ,  C07C45/81 ,  C07C49/84 ,  C07C51/363 ,  C07C51/60

公开(公告)号：BR0316844A

公开(公告)日：2005-10-18

申请号：BR0316844

申请日：2003-12-01

Applicant: BASF AG

Inventor： MAYWALD VOLKER ,  HOFFMANN NICO ,  KEIL MICHAEL ,  VOGELBACHER UWE JOSEF ,  WEVERS JAN HENDRIK

IPC: C07C45/46 ,  C07C45/81 ,  C07C51/363 ,  C07C51/60 ,  C07C49/84

Abstract: A process for preparing benzophenones of the formula I, where X may be chlorine, hydroxyl, methoxy or C 1 -C 6 -alkylcarbonyloxy, and Y may be chlorine or bromine, by reacting an acid chloride of the formula II where X and Y are as defined above with 3,4,5-trimethoxytoluene, which comprises carrying out the reaction in the presence of a) an aromatic hydrocarbon as a diluent and b) from 0.01 to 0.2 mol % of an iron catalyst, based on the acid chloride, c) at a temperature between 60° C. and the boiling point of the particular diluent.

公开(公告)号：AU2003294750A1

公开(公告)日：2004-07-09

申请号：AU2003294750

申请日：2003-12-01

Applicant: BASF AG

Inventor： MAYWALD VOLKER ,  HOFFMANN NICO ,  KEIL MICHAEL ,  VOGELBACHER UWE JOSEF ,  WEVERS JAN HENDRIK

IPC: C07C45/46 ,  C07C45/81 ,  C07C51/363 ,  C07C51/60 ,  C07C49/84

Abstract: A process for preparing benzophenones of the formula I, where X may be chlorine, hydroxyl, methoxy or C 1 -C 6 -alkylcarbonyloxy, and Y may be chlorine or bromine, by reacting an acid chloride of the formula II where X and Y are as defined above with 3,4,5-trimethoxytoluene, which comprises carrying out the reaction in the presence of a) an aromatic hydrocarbon as a diluent and b) from 0.01 to 0.2 mol % of an iron catalyst, based on the acid chloride, c) at a temperature between 60° C. and the boiling point of the particular diluent.