4-Nitroisoxazoles as nitroalkene heterodienes: diastereoselective synthesis of spiro tricyclic nitroso acetals by thermal reactions with ethyl vinyl ether

Citation
D. Giomi et al., 4-Nitroisoxazoles as nitroalkene heterodienes: diastereoselective synthesis of spiro tricyclic nitroso acetals by thermal reactions with ethyl vinyl ether, TETRAHEDRON, 57(19), 2001, pp. 4237-4242
Citations number
38
Categorie Soggetti
Chemistry & Analysis","Organic Chemistry/Polymer Science
Journal title
TETRAHEDRON
ISSN journal
00404020 → ACNP
Volume
57
Issue
19
Year of publication
2001
Pages
4237 - 4242
Database
ISI
SICI code
0040-4020(20010507)57:19<4237:4ANHDS>2.0.ZU;2-B
Abstract
A few 4-nitroisoxazoles were found to undergo highly diastereoselective per icyclic homodomino processes with the title enol ether affording 1,6,9-trio xa-5,9a-diazacyclopenta[d]indenes through bicyclic nitronates as hey interm ediates. Formation of isoxazolooxepine systems is also reported together wi th a domino reaction with the above reagent and methyl acrylate. Two X-ray analyses of compounds 8 and 13 were carried out to firmly establish their s tereochemistry. (C) 2001 Elsevier Science Ltd. All rights reserved.