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Revisiting the Hinsberg Reaction: Facile and Expeditious Synthesis of 3‐Substituted Quinoxalin‐2(1H)‐ones under Catalyst‐Free Conditions in Water |
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| Authors: | Sabbavarapu Narayana Murthy Bandaru Madhav Yadavalli Venkata Durga Nageswar |
| Affiliation: | Organic Chemistry Division‐I, Indian Institute of Chemical Technology, Uppal Road, Hyderabad 500‐607, India (phone: +91?40?27160512) |
| Abstract: | Substituted benzene‐1,2‐diamine reacted with various α‐keto esters at 50° under mild conditions for 15 min using H2O as reaction medium, providing a variety of 3‐substituted quinoxalinone derivatives in excellent yields. The reaction was instantaneous, and products were isolated by simple filtration. |
| Keywords: | Hinsberg reaction Benzene‐1,2‐diamines Esters, α ‐keto Quinoxalinones Pyruvate derivatives |