Direct Phosphonation of Quinolinones and Coumarins Driven by the Photochemical Activity of Substrates and Products

• DOI: 10.1021/acs.orglett.7b00299
• Publication Date: 2017-03-02T12:46:10Z
• Authors: Inwon Kim; Minsik Min; Dahye Kang; Kiho Kim; Sungwoo Hong
• Keywords: 01 natural sciences; 0104 chemical sciences

Light-promoted phosphonation of quinolinones and coumarins was developed without the need for an external photocatalyst. Investigations support a mechanism whereby both starting materials products act as photosensitizers upon excitation using compact fluorescent light sources to photochemically promote dissociation N–O bond in pyridinium salt by single electron transfer pathway. A wide range quinolinone coumarin substrates can be utilized process under mild reaction conditions.