Tetrahedron (2020)
Update date:2022-08-11
Topics:
Kise, Naoki
Yamamoto, Shota
Sakurai, Toshihiko
The reductive coupling of phthalic anhydrides with acetone by Zn-TiCl4 in THF gave two-to-one and one-to-one coupled products. The coupled products were transformed to 3,3-diisopropyl-, 3-isopropylidene-, and 3-isopropylphthalides. In addition, the reductive coupling of phthalic anhydrides with acetonylacetone by Zn-TiCl4 in THF gave 3-spirocyclopentanylphtalides stereoselectively.
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