Preparation of N-cyanoimidate herbicide intermediates

Details Preparation of N-cyanoimidate herbicide intermediates Preparation of N-cyanoimidate herbicide intermediates

1979-10-04

1981-09-01

Berch, Mark L.

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

Organic compounds

Nitrogen attached directly or indirectly to the purine ring...

564106, C07D23952, C07C12508, C07C11918, C07D23958

Patent

active

042873436

ABSTRACT:
Certain N-cyanoimidates are prepared by (a) contacting a propendimidate dihydrohalide salt with two equivalents of a base to produce a bisimidate; (b) contacting the bisimidate with cyanogen chloride to produce a mixture of N-cyanoimidate and a monohydrohalide bisimidate salt; (c) isolating the N-cyanoimidate. The N-cyanoimidate may, by heating, be converted to a pyrimidine, useful as a herbicide intermediate.

REFERENCES:
patent: 2697727 (1954-12-01), Kaiser
patent: 2971973 (1961-02-01), Winthrop
patent: 3225077 (1965-12-01), Schaefer

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