1996年11月
Thermal addition reaction of aroylketene with ethyl vinyl ether: Aromatic substituent effect on aroylketene reactivity
HETEROCYCLES
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- 巻
- 43
- 号
- 11
- 開始ページ
- 2457
- 終了ページ
- 2464
- 記述言語
- 英語
- 掲載種別
- 出版者・発行元
- PERGAMON-ELSEVIER SCIENCE LTD
A series of aroylketenes (2) generated by thermolysis of 5-aryl-2,3-dihydrofuran-2,3-diones (1) reacted with ethyl vinyl ether under a thermal condition to give 2,3-dihydro-4H-pyran-4-ones (3) and/or 4H-pyran-4-ones (4). In this reaction the electron withdrawing substituent (NO2, Cl) introduced into the aryl part enhanced the ketene reactivity (2b-e), while the electron donating one (OMe) did not affect its reactivity (2f-g) in a significant extent. The heteroaroylketenes (2h) and (2i) showed a fairly good reactivity.
- リンク情報
- ID情報
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- ISSN : 0385-5414
- Web of Science ID : WOS:A1996VU55800018