Abstract
Thermal treatment of oxiranes 1 and 4 affords 2H, 4H, 9H -furo[3,2-c][1]benzopyrans 5 and 6 through an intra-molecular 1,3-dipolar cycloaddition between the carbonyl ylide, generated by ring opening of the oxirane, and the acetylene moiety. © 1991.
Original language | English |
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Pages (from-to) | 7713-7718 |
Journal | Tetrahedron |
Volume | 47 |
Issue number | 36 |
DOIs | |
Publication status | Published - 2 Sep 1991 |
Keywords
- acetylene
- carbonyl ylide
- furobenzopyran
- intramolecular 1,3-dipolar cycloaddition