| 摘要 |
<p>O-(1-ALKOXY CARBONYL-1-PROPEN-2-YL)-PHOSPHOROHALIDATES The present invention relates to a novel process for the production of thiophosphoric acid derivatives of the formula wherein R1 is C1-C5 alkyl X is H, C1 or Br Y1 is C1-C5 alkoxy, C1 or Br and Y2 is C1 or Br and the -CH3 and -COOR1 radicals are Cis one to another in the crotonic acid moiety. The compounds of formula I are useful intermediates in the production of known insecticides.</p> |
