Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing
Reexamination Certificate
2007-05-08
2007-05-08
Kumar, Shailendra (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Amino nitrogen containing
Reexamination Certificate
active
11194554
ABSTRACT:
An anilide is reacted with an acylating agent by using as a catalyst a tri(perfluoroalkane sulfonate) compound of any of the elements belonging to groups 3 to 5 and groups 13 to 15 in periods 4 to 6 of the periodic table, thereby bonding an acyl group to the benzene ring. Thus, ketoaniline derivatives, which are useful as physiologically active compounds or intermediates in synthesizing the same, are synthesized in high reaction yield by catalytic acylation.
REFERENCES:
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patent: 2001-145833 (2001-05-01), None
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J. Matsuo, et al., “Gallium nonafluorobutanesulfonate as an efficient catalyst in Friedel-Crafts acylation”, Synlett, 2000(3), 403-405, 2000.
S. Kobayashi et al., “Catalytic Friedel-Crafts acylation of benzene, chlorobenzene, and fluorobenzene using a novel catalyst system, hafnium triflate and trifluoromethanesulfonic acid”, Tetrahedron Lett., 39 (26), 4697-4700, 1998.
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Shū Kobayashi et al., “Catalytic Friedel-Crafts Acylation of Aniline Derivatives”, Adv. Synth. Catal., 343, No. 1, pp. 71-74, 2001.
Japan Science and Technology Corporation
Kumar Shailendra
Wenderoth , Lind & Ponack, L.L.P.
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