A new synthesis of 3,4-dihydro-7-hydroxynaphthalen-2(1H)-one. Photolysis of p-[2-(2-halogenomethyl-1,3-dioxolan-2-yl)ethyl]phenol and 1,4-dioxadispiro-[4,1,5,2]tetradeca-8,11-dien-10-one
Abstract
Photolysis of p-[2-(2-chloromethyl-1,3-dioxolan-2-yl)ethyl]phenol and 1,4-dioxadispiro[4,1,5,2]tetradeca-8,11-dien-10-one gives in good yield 3′,4′-dihydro-7′-hydroxyspiro[1,3-dioxolan-2,2′-(1′H)-naphthalene] which is hydrolysed to 3,4-dihydro-7-hydroxynaphthalen-2(1H)-one.