| abstract |
NEW MATERIAL:A compound shown by formula I (R 1 and R 2 are lower aliphatic hydrocarbon group which may be replaced with functional group; R 3 WR 6 are H or lower aliphatic hydrocarbon group; dotted line part is alicyclic structure consisting of hydrocarbon chain which may be replaced with functional group). n EXAMPLE: 1,9-Dimethyl-9-(1'-methyl-2'-propenyl)-4,8-cis-bicyclo[4,3,0]nonadion-4,4- ethylenethioketal. n USE: An intermediate for synthesizing glycinoeclepin A, an active ingredient for an agricultural chemical for controlling soybean cyst nematode and an intermediate thereof. n PREPARATION: A polycyclic carbonyl compound shown by formula II is ketalized and the prepared ketalized compound is reacted with an unsaturated alcohol shown by formula III in a solvent (e.g. benzene or toluene) preferably at 110W145°C to give a compound shown by formula I. n COPYRIGHT: (C)1988,JPO&Japio |