KOMPOSITION FOR KONTROLL AV INSEKTER AV ORDNINGEN PITYOGENES CHALCOGRAPHUS INNEHALLANDE 2-ETYL-1,6-DIOXASPIRO-(4,4)-NONAN SAMT ANVENDNING DERAV FOR ATT ATTRAHERA NEMNDA INSEKTER

摘要

The present invention relates to a composition for the control of insects of the order of Pityogenes chalcographus which comprises together with a carrier substance a compound of formula (I) Method of attracting bark beetles of the said class. Process for the preparation of the spiro derivative of formula (I) starting from non-4-yn-1,7-diol.