| 摘要 |
Production of 2-chloro-alkyl-(or cycloalkyl or aromatic)-isocyanide dichlorides by reacting an olefin of the formula IN WHICH R1 to R4 each individually is hydrogen, alkyl, cycloalkyl, aromatic having up to 10 carbon atoms, or such radicals optionally substituted with NO2, halo, or alkoxy, or R1 and R2 together with the GROUP FORM AN ALICYCLIC RING SYSTEM OPTIONALLY CONTAINING AN -SO2- group with hydrocyanic acid and with a chlorine-contributing compound, e.g. chlorine or sulfuryl chloride, in an amount at least equivalent to the sum total of the quantities of olefin and hydrocyanic acid used, e.g. at a temperature of about -10 DEG to +40 DEG C; the produced isocyanide dichlorides having the corresponding formula IN WHICH R1 to R4 are the same as defined above, including -N=CCl2 as optional further substituent for said substituted radicals, and being usable as intermediates for producing plastics auxiliaries, or directly for the production of isocyanates which optionally may be converted in turn with amines into ureas in the known manner, or directly as plant protection agents.
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