Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1982-06-28
1984-03-20
Torrence, Dolph H.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
260465G, 562426, 564329, 568 43, 568306, 568319, 568322, C07C12175, C07C 4543, C07C14900
Patent
active
044380437
ABSTRACT:
A process for the preparation of di- or trifluoromethoxyphenyl ketones or di- or trifluoromethylthiophenyl ketones, characterized in that, in a first stage, a di- or trihalomethoxybenzene or a di- or trihalomethylthiobenzene is reacted with a trihalomethylated aromatic or aliphatic compound in the presence of boron trifluoride in an amount such that the absolute pressure of boron trifluoride within the reaction vessel exceeds 1 bar, and in the presence of hydrofluoric acid as a solvent and in that, in a second stage, the product of the first stage is hydrolyzed. The resultant products are useful as intermediates in the synthesis of compounds having a pharmaceutical or phytosanitary (e.g., herbicidal) activity.
REFERENCES:
patent: T970006 (1978-05-01), Rose
patent: 2273922 (1942-02-01), Benning et al.
patent: 2275312 (1942-03-01), Tinker et al.
patent: 2372562 (1945-03-01), Emerson
patent: 2735868 (1956-02-01), Frevel et al.
patent: 2781402 (1957-02-01), Chadwick
patent: 2974172 (1961-03-01), Luvisi
patent: 3187057 (1965-06-01), Peter et al.
patent: 3387035 (1968-06-01), Gray et al.
patent: 3732307 (1973-05-01), Middleton
patent: 3883594 (1975-05-01), Schmerling
patent: 3953400 (1976-04-01), Dahl
patent: 3967949 (1976-07-01), Benefiel et al.
patent: 4178460 (1969-12-01), Berkelhammer et al.
patent: 4207266 (1980-06-01), Opie
patent: 4276226 (1981-06-01), Clement et al.
Buu-Hoi, et al., J. Org. Chem., vol. 26, pp. 2401-2402, (1961).
L. Yagupol'skii et al., Chem. Abstracts, 61:8217, (1964).
V. Boiko, et al., Chem. Abstracts, 87:134226h, (1977).
Rhone-Poulenc Specialites Chimiques
Torrence Dolph H.
LandOfFree
Process for preparation of di- or trifluoromethoxyphenyl ketones 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 preparation of di- or trifluoromethoxyphenyl ketones, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparation of di- or trifluoromethoxyphenyl ketones will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1603369