Abstract: A process for preparing the compound (11.beta.,16.beta.)-21-(acetyloxy)-11-hydroxy-2'-methyl-5'H-pregna-1,4-die no[17,16-d]oxazole-3,20-dione (INN deflazacort) which comprises reacting (11.beta.,16.beta.)-11,21 -dihydroxy-2'-methyl-5'H-pregna-1,4-dieno[17,16-d]oxazole-3,20-dione with acetic anhydride in a suitable organic solvent in the presence of a basic catalyst and water.
Abstract: There is provided an effective and efficient, three step process for the manufacture of crop-selective, herbicidal 1-{[2-(cyclopropylcarbonyl)phenyl]sulfamoyl}-3-(4,6-dialkoxy-2-pyrimidinyl )urea compounds, and an intermediate for use therein.
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