Novel photochemical ring contraction of 1-naphthols promoted by aluminum halides
作者:Kiyomi Kakiuchi、Bunji Yamaguchi、Yoshito Tobe
DOI:10.1021/jo00020a005
日期:1991.9
Irradiation of 1-naphthol (1a) and its 2-alkyl and 6-methoxy derivatives 1b-d with 5 equiv of AlCl3 or AlBr3 in CH2Cl2 gave (chloromethyl)indanones 4a-d in 41-72% yields. Irradiation of 1a with AlBr3 in CH2Br2 afforded (bromomethyl)indanone 5a in 54%. 3-Methyl derivative 1e was unreactive and 4-methyl derivative 1f underwent isomerization to 1e.