| 摘要 |
Propargyl esters of formula (Ia) and (Ib) are new: R1-R3 = H, Cl, Br, NO2, 1-4C alkyl, 2-4C alkenyl, 1-4C haloalkyl, 2-4C haloalkenyl, or phenyl opt. substd. by halogen, 1-4C alkyl or 1-4C alkoxy; X = O or S; n = 0 or 1; R1-R3 may also be F, CN, 1-4C alkoxy, 1-4C haloalkoxy, 2-4C alkenyloxy or 2-4C haloalkenyloxy when X = S. |
