Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1986-04-07
1987-06-23
Reamer, James H.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
568316, C07C 4563
Patent
active
046754482
ABSTRACT:
1-[2,5-Bis(2,2,2-trifluoroethoxy)phenyl]ethanone is chlorinated to 1-[2,5-bis(2,2,2-trifluoroethoxy)phenyl]-2,2-dichloroethanone and, if desired, to 1-[2,5-bis(2,2,2-trifluoroethoxy)phenyl]-2,2,2-trichloroethanone in a solvent mixture of about 0.5-35 parts by volume of 1,2-dichloroethane and one part by volume of acetic acid. The products can then be converted to flecainide. In a preferred embodiment of the invention, the starting material is a crude, wet material that is prepared with a minimum of solids handling.
REFERENCES:
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patent: 3390187 (1968-06-01), Falbe et al.
patent: 3850989 (1974-11-01), Havinga et al.
patent: 4001335 (1977-01-01), Schaffner et al.
patent: 4289909 (1981-09-01), Freenor et al.
Minakov et al., Chemical Abstracts, vol. 87, 6756z (1977).
Ethyl Corporation
Hogan Patricia J.
Johnson Donald L.
Reamer James H.
Sieberth John F.
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