Process for producing asymmetrical thioureas

Details Process for producing asymmetrical thioureas Process for producing asymmetrical thioureas

1981-12-28

1983-11-29

Waltz, Thomas A.

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

Organic compounds

Amino nitrogen containing

C07C15705

Patent

active

044182104

ABSTRACT:
A novel process for preparing asymmetrical thioureas having the formula ##STR1## is disclosed, which comprises reacting RNH.sub.2 with CS.sub.2 in the presence of a base to produce RNHCS.sub.2 .crclbar. followed by reaction of the RNHCS.sub.2 .crclbar. with R.sub.1 R.sub.2 NH in the presence of a catalytic amount of a base to produce the desired product.

REFERENCES:
patent: 1477804 (1923-12-01), Bedford et al.
patent: 1577797 (1926-03-01), Flemming
patent: 1669242 (1928-05-01), Heuser
Schroeder, "Thioureas", Chemical Reviews, vol. 55, pp. 190-192 (1955).

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