An efficient synthesis of spiroindolopyranoquinazolines has been achieved in good yields by using one-pot, three-component condensation of alkyl malonates, tryptanthrin, and active methylene compounds in the presence of DABCO as organocatalyst in CH3CN at reflux
An efficient synthesis of spiroindolopyranoquinazolines has been achieved in good yields by using one-pot, three-component condensation of alkyl malonates, tryptanthrin, and active methylene compounds in the presence of DABCO as organocatalyst in CH3CN at reflux
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