Cycloaddition of 9,10-dimethoxyanthracene (1) to tetrabromoacetone (2a) under a variety of conditions afforded isomers 3a,b; reductive debromination of 3a,b afforded 4, while reduction with NaBH4 gave alcohol 6 which on reductive debromination gave olefin 7; reaction of 1 with 2b gave isomers 8a,b.
References
1.
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7.
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AfonsoC. A. M., MotherwellW. B., O'SheaD. M., and RobertsL. R., Tetrahedron Lett., 1992, 33, 3899.
