The purpose of the notification is to obtain 7 -methoxy -1,2,3 -tris (4 -methoxyphenyl)-1,2,3,4 -tetrahydronaphthalene of model 1. That way is,that (E)-4,4'-dimethoxysilben is dissolved in methylene chloride,iodine 1 -1 mol /mol is added in relation to stilben and mixed for at least 20 -hour temperatures 20 -30,water is then added to the reaction mixture and extracted several times and the combined organic phases are washed with an aqueous solution of sodium pyrosircine,and then with water, the organic layer is dried with anhydrous MgSO4 and weighed.
