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Background: A versatile, facile, one-pot multi-component protocol for the synthesis of 4Hbenzochromenes using L- valine as organocatalyst in aqueous medium has been developed. Methods: Superior catalytic performance of L- valine, operational simplicity, easy workup procedure and recyclability of the catalyst are the key strengths of reported strategy. Results: Therefore, it is a green alternative to the existing protocols. Conclusion: This method offers mild reaction conditions, the use of easily available cheap reagents, short reaction times, excellent yields and high atom economy.
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Tiwari et al. (2018) studied this question.
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