Preparation of trans cyclohexane 1,4-diurea

Details Preparation of trans cyclohexane 1,4-diurea Preparation of trans cyclohexane 1,4-diurea

1982-09-20

1984-08-21

Waltz, Thomas A.

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

Organic compounds

Amino nitrogen containing

564 61, C07C12715

Patent

active

044671148

ABSTRACT:
A process is disclosed for selectively making trans-cyclohexane-1,4-diisocyanate, trans-cyclohexane-1,4-diamine, a trans-cyclohexane-1,4-diurethane, a trans-cyclohexane-1,4-diurea and trans-cyclohexane-1,4-disulphonyl urea by reacting ammonia with a mixture of cis and trans-cyclohexane-1,4-dicarboxylic acid, a lower alkyl ester, a glycol ester, an oligomeric ester or a polyester to make a solid trans-dicarboxylic acid diamide in a first step. The diamide is chlorinated to form cyclohexane-1,4-dicarboxylic acid-bis-N-chloramide. The latter compound is then converted into a

REFERENCES:
patent: 3151143 (1964-09-01), Hoch
patent: 3935258 (1976-01-01), Hempel et al.
patent: 4082749 (1978-04-01), Quadbeck-Seeger et al.
patent: 4238404 (1980-12-01), Zengel et al.
patent: 4346233 (1982-08-01), Zengel et al.

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