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.