| abstract |
Mercaptoethyl carbamates are prepared by reacting a primary or secondary amine with ethylene monothiolcarbonate in a molar ratio of not more than 1: 1. The compounds of formula G[COOCH2CH2SH]n are claimed as novel, n being 1 or 2; when n 1 G is RNH or R2N, wherein each R is C1-18 alkyl or is cycloalkyl; oe R1NH, wherein R1 is phenyl which may be substituted by halogen or C1-4 alkyl or alkoxy; or ZN, wherein Z makes up a 5- or 6-membered ring with the N, the other ring members being C, or C and O or N; and when n is 2 G is -YN(CH2)xNY-, wherein Y is H or C1-18 alkyl and x is 2-18; or phenylene diamino; or piperazino which may be substituted by C1-18 alkyl. In examples, G is C4H9NH, C6H13NH, CH2:CHCH2NH, (CH3)2CHNH, (C4H9)2N, morpholino, piperidino, N-methylpiperazino, benzylaimno, piperazino and ethylenediamino (n being 2 in the last two cases). Specification 998,606 is referred to. |