Synthesis of 4-oxepanones by the Lewis acid-promoted ring-expansion reaction of cyclopropapyranones

Authors
Sugita, Y Kimura, C Hosoya, H Yamadoi, S Yokoe, I
Citation
Y. Sugita et al., Synthesis of 4-oxepanones by the Lewis acid-promoted ring-expansion reaction of cyclopropapyranones, TETRAHEDR L, 42(6), 2001, pp. 1095-1098
Citations number
27
Categorie Soggetti
Chemistry & Analysis","Organic Chemistry/Polymer Science
Journal title
TETRAHEDRON LETTERS
ISSN journal
00404039 → ACNP
Volume
42
Issue
6
Year of publication
2001
Pages
1095 - 1098
Database
ISI
SICI code
0040-4039(20010205)42:6<1095:SO4BTL>2.0.ZU;2-7
Abstract
In the presence of a Lewis acid, cyclopropapyranones easily reacted with si lyl enolates to give the 4-oxepanones in good yields. In this reaction, the trans-isomer was mainly obtained. (C) 2001 Elsevier Science Ltd. All right s reserved.