| 摘要 |
A process for preparing a compound of formula (IV) wherein R1 is C1-4 alkyl, C1-4 haloalkyl, benzyl, C3-6 alkenyl or C3-6 alkyny, (provided that the alpha-carbon atom of R1 is neither unsaturated nor substituted with halogen), which comprises reacting a compound of formula (III) with a source of hydroxylamine in the presence of an acid. Compounds of formula (IV) are agrochemical intermediates. |
