Preparation of n-aryl amides from isocyanates

Details Preparation of n-aryl amides from isocyanates Preparation of n-aryl amides from isocyanates

1991-09-09

1993-11-09

Hollrah, Glennon H.

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

564153, 564155, 564183, 564184, 564214, C07C23305

Patent

active

052604837

ABSTRACT:
Methods of producing N-aryl amides comprise reacting an aromatic isocyanate compound with substantially anhydrous carboxylic acid and recovering the resulting N-aryl amide. Additionally, or alternatively, methods of forming N-aryl amides comprise reacting an aromatic isocyanate compound with substantially anhydrous carboxylic acid in the presence of an anhydrous hydrogen halide or hydrolytically unstable halide compound and recovering the resulting N-aryl amide. These reactions may occur in the presence of an aprotic solvent.

REFERENCES:
patent: 2459439 (1949-01-01), Lichty et al.
patent: 3350438 (1967-10-01), Hennig
patent: 3660326 (1972-05-01), Mallakar
patent: 3759873 (1973-09-01), Hadak
patent: 3799963 (1974-03-01), Adams
patent: 3896089 (1975-07-01), Noda et al.
patent: 3984380 (1976-10-01), Allard
patent: 4061622 (1977-12-01), Onder
patent: 4094866 (1978-06-01), Onder
patent: 4105686 (1978-08-01), Raes
patent: 4156065 (1979-05-01), Onder
patent: 4269750 (1981-05-01), Lewalter et al.
patent: 4281095 (1981-07-01), Dunwald et al.
patent: 4395531 (1983-07-01), Toyoda et al.
patent: 4417002 (1983-11-01), Liessem
patent: 4467083 (1984-08-01), Grossman et al.
patent: 4548970 (1985-10-01), Zecher et al.
patent: 4549006 (1985-10-01), Zecher et al.
Ozaki and Shimada, Nihon Kagaku Zasshi, vol. 80, (1959), pp. 434 and 435; and translation of the complete article.
Nikonova, Vapenen Plact. Massy, 115-122 (1976).
Diechmann, Ber. Dtsch Chem Gas, 309:3052 (1906).
Fry, JACS, vol. 75, pp. 2686-2688 (1975).
Blagbrough et al, Tetrahedron Letters, vol. 27, 11, 1251-4 (1986).
Haller, GR Acad. Sci, vol. 121, 4, pp. 189-193 (1895).
Haller, Comptes Rendus, vol. 120, 1326-9 (1895).
Haller, CR Acad Sci Paris, vol. 64, 23, 1326-9 (1892).
Ozaki et al, Kogyo Kagahu Zasshi, No. 5, vol. 80, 506-9 (1959).
Troparevsky et al, Anales Soc. Quim. Argentina, vol. 61, pp. 227-231 (1973).
Naegeli, Helv. Chim. Acta, vol. 18, 142-160 (1935).
Naegeli, Helv. Chim. Acta, vol. 17, 931-957 (1934).
Sorobin et al, Tv. Mosl. Khim. Technol. Inst., vol. 86, pp. 25-26 (1975).

Affiliated with

Also associated with

Rating

Preparation of n-aryl amides from isocyanates does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Preparation of n-aryl amides from isocyanates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of n-aryl amides from isocyanates will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1144489