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US4600792A Preparation of biphenylylsulfonylureas and intermediates therefor 失效
联苯磺酰脲类及其中间体的制备

Preparation of biphenylylsulfonylureas and intermediates therefor
摘要:
The novel process ##STR1## in which R is a lower alkyl group or an aryl groupR.sup.1 is a chlorine atom or --O--R, andY is CH or N.The end products I are known herbicides. Intermediates (II) are new.
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