4-hydroxy-2'-nitrobutyrophenone and tetrahydro-2-(o-nitrophenyl)-2-furanol useful as intermediates in the preparation of a crop-selective herbicide

摘要

There are provided 4-Hydroxy-2'-nitrobutyrophenone and tetrahydro-2-(o-nitrophenyl)-2-furanol and mixtures thereof, important intermediates in the preparation of the crop-selective herbicidal agent 1-((o-(cyclopropylcarbonyl)phenyl)sulfamoyl)-3-(4,6-dimethoxy-2-pyrimidinyl)urea. Also provided is a method for the preparation of 4-halo-2'-nitrobutyrophenone, useful as an intermediate in the preparation of 1-((o-(cyclopropylcarbonyl)phenyl)sulfamoyl)-3-(4,6-dimethoxy-2-pyrimidinyl)urea.