An efficient synthesis of fluorescent spiro[benzopyrazoloquinoline-indoline]triones and spiro[acenaphthylenebenzopyrazoloquinoline]triones

作者：Dabiri Minoo^*; Tisseh Zeinab Noroozi; Bazgir Ayoob

来源：Monatshefte fur Chemie, 2012, 143(1): 139-143.

DOI：10.1007/s00706-011-0571-x

• Isatin
• Spirooxindole
• Aminopyrazole
• Spiro[benzopyrazoloquinoline-indoline]

An efficient and simple synthesis of spiro[11H-benzo[g]pyrazolo[4,3-b]quinoline-11,3'-[3H]indole]-2',5,10(1'H)-triones and spiro[acenaphthylene-1(2H),11'-[11H]benzo[g]pyrazolo[4,3-b]quinoline]-2,5',10'-triones by a three-component condensation reaction of 2-hydroxy-1,4-naphthoquinone, pyrazol-5-amines, and isatins or acenaphthylene-1,2-dione in the presence of p-TSA as an inexpensive and available catalyst in refluxing ethanol is reported.

• 出版日期2012-1