SYNTHESIS OF REGIOISOMERS OF VARIOUS 7-O-SUBSTITUTED PRECOCENE-3 ANALOGUES
The synthesis of benzopyran compounds (VIIa-j), regioisomers of precocene-3 (II) containing various 7-O-substituents, is described .
Timar, Tibor,Jaszberenyi, J. Csaba,Hosztafi, Sandor
p. 487 - 496
(2007/10/02)
Chromene derivatives useful as insecticides
The invention relates to pesticidal compositions comprising as active ingredient a compound of the general Formula I STR1 wherein R1 and R2 stand for hydrogen, optionally halogenosubstituted C1-6 alkyl or aryl; R3/su
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(2008/06/13)
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