
Tetrahedron p. 11755 - 11780 (1994)
Update date:2022-08-05
Topics: Substituted Preparation Transformations
Coutts, Simon J.
Wallace, Timothy W.
Heterodiene cycloadditions of 4-oxo-4H-1-benzopyrans with formyl, acetyl, or carboxyl substituents at C-3 to 1-alkoxy- or 1,1-dialkoxyalkenes produce 3-alkoxy- or 3,3-dialkoxy-4,4a-dihydropyrano[4,3-b][1]benzopyran-10-ones which are capable of a variety o
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