4H-1,3-oxazines, 4,5-dihydro-oxazoles, and thia analogues from hetero-1,3-dienes and 1-alkynes
- 1 January 1983
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Chemical Communications
- No. 17,p. 945-947
- https://doi.org/10.1039/c39830000945
Abstract
4H-1,3-Oxazines (3) and/or 4,5-dihydro-oxazoles (9,10) and thia analogues are formed on reaction of alk-1-ynes with the 4,4-bis(trifluoromethyl)-1-oxa-3-azabuta-1,3-dienes (1) and 1-thia-3-azabuta-1,3-dienes (4), respectively.Keywords
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