| 摘要 |
<p>1286739 Thiohydroxamate carbamaies E I DU PONT DE NEMOURS & CO 29 Oct 1970 [30 Oct 1969] 51536/70 Heading C2C Thiolhydroxamate carbamates of the formula wherein R 1 is a methyl, ethyl, (methylthio)- methyl or methoxy methyl group and R 2 is a methyl, ethyl or propyl group, are obtained by reacting isocyanic acid with thiolhydroxamate esters (HO-N=CR 1 -S-R 2 ), at -15‹ to 80‹ C. and at a pH of 1.5 to 5, the reaction being conducted in a medium comprising at least 50% by weight of water and up to 50% by weight of an inert organic liquid.</p> |
