CYCLIZATION OF O-(3-HYDROXY-3-METHYLBUTYNYL)PHENOLS WITH BORON TRIBROMIDE TO 4-BROMO-2,2-DIMETHYLCHROMENES AND THEIR ELECTROREDUCTION TO 2,2-DIMETHYLCHROMENES

Authors
TSUKAYAMA M UTSUMI H KUNUGI A NOZAKI H
Citation
M. Tsukayama et al., CYCLIZATION OF O-(3-HYDROXY-3-METHYLBUTYNYL)PHENOLS WITH BORON TRIBROMIDE TO 4-BROMO-2,2-DIMETHYLCHROMENES AND THEIR ELECTROREDUCTION TO 2,2-DIMETHYLCHROMENES, Heterocycles, 45(6), 1997, pp. 1131-1142
Citations number
25
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Heterocycles → ACNP
ISSN journal
03855414
Volume
45
Issue
6
Year of publication
1997
Pages
1131 - 1142
Database
ISI
SICI code
0385-5414(1997)45:6<1131:COOWBT>2.0.ZU;2-9
Abstract
Cyclization of o-(3-hydroxy-3-methylbutynyl)phenols (2) with boron tri bromide gave easily 4-bromo-2,2-dimethylchromenes (3). Electrolytic re duction of 3 at a Hg-pool electrode afforded the corresponding 2,2-dim ethylchromenes (6) in high yields.