Sc(OTf)3-catalyzed synthesis of pyrano[3,2-b]-1-benzopyrans from d-glycals
Author/Authors :
Yadav، نويسنده , , J.S. and Reddy، نويسنده , , B.V.S and Chandraiah، نويسنده , , L and Jagannadh، نويسنده , , B and Kumar، نويسنده , , S.Kiran and Kunwar، نويسنده , , Ajit C، نويسنده ,
Issue Information :
هفته نامه با شماره پیاپی سال 2002
Pages :
4
From page :
4527
To page :
4530
Abstract :
Glycals react smoothly with o-hydroxybenzaldehydes and trimethyl orthoformate in the presence of a catalytic amount of scandium triflate under mild reaction conditions to afford the corresponding cis-annelated pyranobenzopyrans in good yields with high diastereoselectivity.
