Vinylnaphtha1enes.-We have found in our previous experiments that only a- vinylnaphthalene is able to undergo a diene reaction, whereas 1-(a-naphthyl)-cyclopentene- 1 and 1-(6'-methoxynaphthyl-2')-cyclopentene-l were unreactive. In the meantime, Bachmann and Kloetze12 described the proper conditions for the condensation of these dienes with maleic anhydride. In the case of 1-(a-naphthyl)-cyclohexene-1 we have not ...
