Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1986-08-28
1989-01-10
Ford, John M.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
548378, C07D23110
Patent
active
047974940
ABSTRACT:
Carbamic acid derivatives having the following general formula: ##STR1## wherein R is an aromatic radical containing at least one benzene ring with at least one hydrogen atom substituted with a methyl, methylene or methine group; n=2 to 7.
A method for preparing carbamic acid derivatives which comprises reacting 3(5)-methylpyrazole with an isocyanate of the general formula: R(NCO).sub.n, wherein: R is an aromatic radical containing at least one benzene ring having at least one hydrogen atom substituted with a methyl, methylene or methine group; n=2 to 7; the reaction being conducted in a melt or a solution of an inert organic solvent.
REFERENCES:
patent: 3317463 (1967-05-01), Schonfeld et al.
patent: 4191833 (1980-03-01), Tucker
Morrison et al., Textbook "Organic Chemistry" 3rd Ed., Allyn and Bacon, Inc., Boston, MA 1978, p. 1044.
Alyakrinskaya Aida I.
Belkin, administrator by Naum S.
Belkina, deceased Tamara M.
Berezin Vitaly B.
Bukin Boris A.
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