CFL light promoted one-pot synthesis of pyrano[3,2-c]chromen-5(4H)-ones

ABSTRACT

An eco-friendly synthesis of pyrano[3,2-c]chromen-5(4H)-one derivatives was conducted by the condensation of 4-hydroxycoumarins, aromatic aldehydes, and acetophenones. Clean profile, excellent yield, ambient temperature, and use of visible light intensity instead of catalyst are the attractive features of this method.

GRAPHICAL ABSTRACT

KEYWORDS:

• CFL light
• coumarins
• photoorganic
• pyranocoumarins
• pyrans
• visible light

Additional information

Funding

This work is generously supported by the Department of Science and Technology-Science and Engineering Research Board (DST-SERB), New Delhi, India under the Fast Track Young Scientist Scheme (Grant No: SB/FT/CS-028/2013 dated: 09.06.2014, 24.09.2015, and 12.09.2016) in the form of major research project.