Synthesis of 2-Aryl-3-hydroxy-4,9-dihydrocycloheptapyran-4,9-diones
3-(2-Bromoacetyl)tropolone (1) reacted with benzaldehydes 2a-g in the presence of alkali at low temperature to give 2-aryl-3-hydroxy-4,9-dihydrocycloheptapyran-4,9-diones 3a-g in good yields.
Jin, Young-Zhi,Jin, Zhong-Tian,Imafuku, Kimiaki
p. 817 - 818
(2007/10/02)
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