Synthesis and Study on Insecticidal Activity of New Heterocyclic Chalcone Derivatives

a a * , a ( a 610039) ( b 610039) , Claisen-Schmidt 21 .(Aphis craccivora)(Pieris rapae), ., ., 2l (LC 50 ) 1.6 g/mL, (LC 50 1.8 g/mL), 1b1f2j2n ; 1f 2m LC 50 6.6 g/mL 8.5 g/mL, (LC 50 9.2 g/mL).