| 摘要 |
1,240,622. Oxime carbamates. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 2 Dec., 1969 [21 Jan., 1969], No. 3323/69. Heading C2C. [Also in Division A5] 1 - Propargylthio - acetaldoxime N - methylcarbamate is prepared by refluxing 1-propargylthioacetaldoxime and methyl isocyanate in dichloromethane containing triethylamine (see Example 1). The corresponding oxime N-methyl carbamates (see Table 1) may be prepared using as oximes :-1 - propargylthio - propionaldoxime, 1 - (1 - methylprop - 2 - ynylthio) - acetaldoxime, 1 - propargylthio - isobutyraldoxime, 1- (but - 2 - enylthio) - acetaldoxime, 1 - (2 - methylprop - 2 - enylthio) - acetaldoxime, 1 - (but - 3- enylthio) - propionaldoxime, 1 - (but - 3 - enylthio) - acetaldoxime, 1 - (1,1 - dichloroethylthio) - acetaldoxime, 1-benzylthio-iso-butyraldoxime, 1 - methoxymethylthio - acetaldoxime, 1 - (2 - cyanoethylthio) iso - butyraldoxime, 1 - (2 - methoxyethylthio) acetaldoxime, 1-(but- 2 - ynylthio) acetaldoxime, 1 - (but - 3 - enylthio) isobutyraldoxime, and 1 - (but - 3 - ynylthio) acetaldoxime. By analogous reactions there may also be prepared ;-1-(2-cyanoethylthio) acetaldoxime N - allylcarbamate, 1-(propargylthio) acetaldoxime N-allylcarbamate, and 1 - (2 - cyanoethylthio) acetaldoxime N,N- dimethylcarbamate (see Table 1). |
