| abstract |
The invention relates to 7-substituted 2,3-dihydrobenzofurans. n There are provided 7-substituted benzofurans of general formulan wherein each R 1 represents a hydrogen atom or a methyl group; X, Y and Z together represent a bridging group -CO-0-C(OR)=, or X is a chlorocarbonyl group, Y is hydrogen and Z is a carboxylate ester group -COOR, or X and Y are both hydrogen and Z is a carboxylate ester group -COOR or a sulfonic acid group -SO 3 H, or a salt thereof, and R represents a methyl, ethyl or propynyl group; their preparation; and their use as pesticides or as intermediates in the preparation of pesticidally active compounds. |