Organic compounds -- part of the class 532-570 series – Organic compounds – Containing -c-x-n=n-x- – wherein the x's may be the same or...
Patent
1993-08-02
1995-01-31
Cintins, Marianne M.
Organic compounds -- part of the class 532-570 series
Organic compounds
Containing -c-x-n=n-x-, wherein the x's may be the same or...
560338, 560340, 560345, 560347, 560348, 560336, C07C24900
Patent
active
053860578
ABSTRACT:
The invention concerns a process for the preparation of acyl isocyanates which consists of reacting oxalyl chloride with a salt selected from the group consisting of hydrohalides and sulphates of carboxamides and/or carbamates, unsubstituted on nitrogen, then heating the reaction mixture at a temperature between 30.degree. and 150.degree. C. The process is suitable for preparation of acyl isocyanates with excellent yields in easy to control operational conditions.
REFERENCES:
patent: 3155700 (1964-11-01), Steyermark
patent: 3213135 (1965-10-01), Speziale et al.
patent: 3450747 (1969-06-01), Smith et al.
patent: 3664990 (1972-05-01), Slagel
patent: 3850985 (1974-11-01), Hagemann et al.
patent: 4344962 (1982-08-01), Kuhle et al.
patent: 4663473 (1987-05-01), Geigel et al.
patent: 4769485 (1988-09-01), Urano et al.
patent: 4925982 (1990-05-01), Urano et al.
patent: 4970319 (1990-11-01), Senet et al.
J. Am. Chem. Soc. 62, 1595 (1940)-Dialkyl Biurets, Hill et al.
J. Org. Chem. 27, 3742 (1962) A One Step Synthesis of 1-Substituted Cyclopropanols.
J. Org. Chem. 28, 1805-1811, The Reaction of Oxalyl Chloride with Amides, Speziale et al (1961).
J. Org. Chem. Vo. 30, No. 12-Dec. 1965, The Reaction of Oxalyl Chloride with Amides, Speziale et al.
Heterocycles, vol. 94, 84147e, 1981, Sodium cefuroxime, Thompson.
Synthesis, Dec. 1988, p. 992-994, Convenient Preparation . . . Protected Amines.
J. Heterocycl. Chem. Nov.-Dec. 1990, A Convenient Synthesis of 1-aryl-3-methyl-1,2,4-triazolin-5-ones . . . , Ray et al, 2017.
Dewilde Daniele
Le Goff Philippe
Tsuboniwa Noriyuki
Urano Satoshi
Cintins Marianne M.
MacMillan Keith
Nippon Paint Co. Ltd.
Societe Nationale des Poudres et Explosifs
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