N. Kise, Shota Yamamoto, T. Sakurai
Jan 17, 2020
Citations
0
Influential Citations
4
Citations
Journal
Tetrahedron
Abstract
Abstract 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.