公开(公告)号：CA1303064C

公开(公告)日：1992-06-09

申请号：CA568040

申请日：1988-05-27

Applicant: HOECHST AG

Inventor： HECK DIETER ,  HEISE HARTMUT ,  HINTZMANN MANFRED

IPC: C07C205/38 ,  C07C67/00 ,  C07C201/00 ,  C07C201/12 ,  C07C205/31 ,  C07C205/37

Abstract: HOE 87/F 175 J of the disclosure A process for the preparation of 2,4-dinitrophenyl ethers of the general formula (1) (1) in which R denotes an alkyl(C1-C6) or alkoxy(C1-C4)-alkyl(C1-C4) group by reacting 1 mole of 2,4-dinitro-chlorobenzene in the anhydrous alcohol which is required for the ether formation and is of the general formula (2) R - OH (2) in which R has the abovementioned meaning, in the presence of 1.0 to 3.0 mole of an anhydrous alkali metal carbonate, at temperatures of 20.degree.C to 150.degree.C, where appropriate under pressure.

公开(公告)号：DE3720836A1

公开(公告)日：1988-12-08

申请号：DE3720836

申请日：1987-06-24

Applicant: HOECHST AG

Inventor： HECK DIETER ,  HEISE HARTMUT DR ,  HINTZMANN MANFRED DR

IPC: C07C205/38 ,  C07C67/00 ,  C07C201/00 ,  C07C201/12 ,  C07C205/31 ,  C07C205/37 ,  C07C79/35 ,  C07C76/02

Abstract: A process for the preparation of 2,4-dinitrophenyl ethers of the general formula (1) (1) in which R denotes an alkyl(C1-C6) or alkoxy(C1-C4)alky(C1-C4) group by reacting 1 mole of 2,4-dinitrochlorobenzene in the anhydrous alcohol which is required for the ether formation and is of the general formula (2) R-OH (2) in which R has the abovementioned meaning, in the presence of 1.0 to 3.0 mole of an anhydrous alkali metal carbonate, at temperatures of 20 DEG C. to 150 DEG C., where appropriate under pressure.

公开(公告)号：DE3869473D1

公开(公告)日：1992-04-30

申请号：DE3869473

申请日：1988-05-27

Applicant: HOECHST AG

Inventor： HECK DIETER ,  HEISE HARTMUT DR ,  HINTZMANN MANFRED DR

IPC: C07C205/38 ,  C07C67/00 ,  C07C201/00 ,  C07C201/12 ,  C07C205/31 ,  C07C205/37

Abstract: Prodn. of 2,4-dinitrophenyl ethers of formula (I) is effected by reacting a mixt. of 1 mole 2,4-dinitrochlorobenzene (II) and 1-3 moles anhydrous alkali metal carbonate (III) in an alcohol of formula ROH (IV) at 20-150 deg.C, opt. under pressure; R1 = 1-6C alkyl or (1-4C)alkoxy(1-4C)alkyl. Pref. (III) is K2CO3. The (III):(II) molar ratio is 1.05-1.8:1. The reaction is effected at 40-120 deg.C., opt. in the presence of an inert diluent.