| 摘要 |
Wood preserving composition comprising a compound of formula I <CHEM> wherein A is selected from (i) <CHEM> (ii) <CHEM> and (iii) <CHEM> whereby the beta -carbon attaches to benzene ring of formula (I); R1 and R2 are independently H or Cl; R3 and R4 are independently H or CH3; and R5 is methyl, ethyl or cyclopropyl and method for preserving wood with the aid of a compound of formula (I).
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