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8408245 
Journal Article 
TMSCl-mediated one-pot, three-component synthesis of 2H-indazolo[2,1-b] phthalazine-triones 
Nagarapu, L; Bantu, R; Mereyala, HB 
2009 
Yes 
Journal of Heterocyclic Chemistry
ISSN: 0022-152X 
46 
4 
728-731 
English 
(Chemical Equation Presented) A simple, efficient, and cost-effective method for the synthesis of 2H-indazolo[2,1-b]phthalazine-1,6,11(13H)-trione derivatives by a one-pot, three-component condensation reaction of phthalazide, dimedone, or 1,3-cyclohexanedione and aromatic aldehydes under CH 3CN/DMF (8:2) media at 80deg;C for 30-60 min in the presence of trimethylsilyl chloride (TMSCl) is described. © 2009 HeteroCorporation.