BENZOFURAN DERIVATIVES .5. EFFECT OF SUBSTITUENTS IN THE SYNTHESIS OFBENZOFURANS AND 2,3,4,5-TETRAHYDRO-1-BENZOXEPINE-3,5-DIONES

Authors
SUZUKI T TANEMURA K HORAGUCHI T SHIMIZU T
Citation
T. Suzuki et al., BENZOFURAN DERIVATIVES .5. EFFECT OF SUBSTITUENTS IN THE SYNTHESIS OFBENZOFURANS AND 2,3,4,5-TETRAHYDRO-1-BENZOXEPINE-3,5-DIONES, Journal of chemical research. Synopses, (3), 1996, pp. 132
Citations number
72
Categorie Soggetti
Chemistry
Journal title
Journal of chemical research. Synopses → ACNP
ISSN journal
03082342
Issue
3
Year of publication
1996
Database
ISI
SICI code
0308-2342(1996):3<132:BD.EOS>2.0.ZU;2-#
Abstract
The relative yields of benzofurans (1-7) and 1-benzoxepine-3,5-diones (8) are governed by the electronic effects of alpha-substituents or by the steric effects of 2-acyl groups in reactions with ethyl alpha-sub stituted 2-acetyl-5-methoxy-phenoxyacetates (9a-e) or ethyl 2-acyl-4-m ethoxyphenoxyacetates (9f-i) with potassium hydroxide in dry dioxane.