A convenient catalytic synthesis of 2H-indazolo[2,1-b]phthalazine-triones on reusable silica supported Preyssler heteropolyacid

作者：Gharib Ali^*; Khorasani Bibi Robabeh Hashemipour; Jahangir Manouchehr; Scheeren J W

来源：Bulgarian Chemical Communications, 2013, 45(1): 64-70.

• Indazolo[2,1-b]phthalazine-trione
• Phthalhydrazide
• Dimedone
• Preyssler
• Heteropolyacid

Efficient synthesis of 2H-indazolo[2,1-b]phthalazine-1,6,11(13H)-trione derivatives was achieved by one-pot three-component condensation reaction of phthalhydrazide, dimedone, and aromatic aldehydes under solvent-free conditions. Good to excellent yields were obtained at short reaction times on the reusable silica supported Preyssler heteropolyacid catalyst.

• 出版日期2013