PURPOSE: To obtain a new semicarbazone derivative, having excellent insecticidal and acaricidal activities against agricultural insect pests and tetranychids in a small dose, hardly exerting adverse influences upon mammals, fishes and beneficial insects and useful as a controlling agent for pests.
CONSTITUTION: This semicarbazone derivative is represented by formula I [W is O or S atom; X, Y and Z are each independently a halogen, hydroxyl group, cyano, nitro, etc.; R1 to R3 are each independently H, a 1-6C alkyl, a 2-6C alkenyl, a 2-6C alkynyl, a 1-6C haloalkyl, etc.; (l), (m) and (n) are each an integer of 1-5, etc.], e.g. N-(4-chlorophenyl)-4-chlorobenzamide 4- trifluoromethoxyphenylsemicarbazone. The compound of formula I is obtained by reacting, e.g. a compound of formula II with phosphorus pentachloride, then reacting the resultant compound with a compound of formula III and further reacting the prepared compound with a compound of the formula, R1L1 (L1 is a good eliminative group such as Cl or Br).
OTSU OSAMU
NUMATA AKIRA
ISHII SHIGERU
OGURA TOMOYUKI
MIYAKE TOSHIRO
FUJITA AKIHIKO
MIMORI NORIHIKO
TAKII SHINJI
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