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Microwave induced an efficient, green and rapid protocol for the synthesis of 2‐substituted‐2‐hydroxyindan‐1,3‐dione derivatives from the reaction of ninhydrin and ketone by using inexpensive 1,4‐diazabicyclo[2.2.2]octane (DABCO) organocatalyst in water has been developed. Mild reaction conditions, shorter reaction time, metal‐free approach, water as a green solvent, scalability and broad substrate scope are the salient features of this protocol.
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Verma et al. (2019) studied this question.
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