187276-71-7Relevant academic research and scientific papers
New DBU (1,8-diazabicyclo[5.4.0]undec-7-ene) assisted one-pot synthesis of 2,8-disubstituted 4H-1-benzopyran-4-ones
Riva, Carlo,De Toma, Carlo,Donadel, Leandro,Boi, Carlo,Pennini, Renzo,Motta, Gianni,Leonardi, Amedeo
, p. 195 - 201 (2007/10/03)
2-Hydroxy-3-(alkoxycarbonyl or prop-1-enyl)phenyl alkyl ketones are easily converted into 2,8-disubstituted (3-methyl)-4H-1-benzopyran-4-ones through a new DBU (1,8-diazabicyclo[5.4.0]undec-7-ene) assisted one-pot synthesis, by reaction with aroyl or alkanoyl chlorides or anhydrides. The method is simple, mild and convenient as compared to the existing multistep procedures.
