C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/645.91
C07C 41/06 (2006.01) C07C 41/16 (2006.01) C07C 43/29 (2006.01)
Patent
CA 2031444
ABSTRACT OF THE DISCLOSURE HOE 89/F 383 Process for the preparation of 3,4'-dichlorodiphenyl ether A process for the preparation of 3,4'-dichlorodiphenyl ether from 1,3-dichlorobenzene and 4-chlorophenol, which comprises mixing 1 mol of 4-chlorophenol with about 2 to about 6 mol of initially introduced 1,3-dichlorobenzene and about 1 to about 3 mol of potassium carbonate in about 1 to about 5 mol of a dipolar aprotic solubilizer which boils above l60°C, at temperatures of about 160°C to about 190°C with stirring, then adding about 0.0l to about 1 mol-% of basic copper carbonate of the formula Cu(OH)2?CuCO3?0.5 H2O and heating with stirring to about 170 to about 173°C while removing the water formed by distillation, then optionally adding further 4-chloxo- phenol with the proviso that from the start the amount of 1,3-dichlorobenzene present in terms of moles is always 1 to 3 mol greater than the totally added amount of 4-chlorophenol and, if desired, additionally adding basic copper carbonate of the formula mentioned if at the start less than 0.1 mol-% had been added, additionally stirring within the last-mentioned temperature range and finally working up after allowing to cool.
Hess Reiner
Papenfuhs Theodor
Schubert Hans
Fetherstonhaugh & Co.
Hoechst Aktiengesellschaft
LandOfFree
Process for the preparation of 3,4'-dichlorodiphenyl ether does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for the preparation of 3,4'-dichlorodiphenyl ether, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of 3,4'-dichlorodiphenyl ether will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1535894