Tandem Michael-aldol reaction via 6-endo-dig cyclization of ynone-chalcogenides: synthesis of 2-unsubstituted 3-(hydroxyalkyl)chalcogenochromen-4-ones
Author/Authors :
Kataoka، نويسنده , , Tadashi and Kinoshita، نويسنده , , Hironori and Kinoshita، نويسنده , , Sayaka and Iwamura، نويسنده , , Tatsunori، نويسنده ,
Issue Information :
هفته نامه با شماره پیاپی سال 2002
Pages :
3
From page :
7039
To page :
7041
Abstract :
The reactions of 1-(2-methylchalcogenophenyl)propynone with aldehydes gave 3-(hydroxyalkyl)chalcogenochromen-4-ones via the 6-endo-dig cyclization and aldol reaction. Selenochromen-4-ones were obtained in higher yields than the thiochromen-4-ones.
