Title of article :
Conjugate additions of lithium dialkynylcuprates [(RCC)2CuLi] to activated chromones. Unexpected formation of the 6H-bis[1]benzopyrano[2,3-b:3′,4′-e]pyridine system
Author/Authors :
Y.J. Daia، نويسنده , , Dan E and Gabbutt، نويسنده , , Christopher D and Heron، نويسنده , , B.Mark and Hepworth، نويسنده , , John D and Hursthouse، نويسنده , , Michael B and Malik، نويسنده , , K.M.Abdul، نويسنده ,
Issue Information :
هفته نامه با شماره پیاپی سال 2003
Abstract :
Lithium dialkynylcuprates [(RCC)2CuLi], 1a–d, are easily generated and undergo conjugate additions to activated chromones giving 2-alkynylchroman-4-ones 4a–d, 13, 15c,d and 5, however, 1,4-additions to 3 proceed anomalously to give the eneynonitriles 6a–b and the bisbenzopyranopyridine 7.
Journal title :
Tetrahedron Letters
Journal title :
Tetrahedron Letters
