Enyne Metathesis: A Catalytic, Cross-Selective Diene Synthesis
作者:Steven T. Diver、Anthony J. Giessert
DOI:10.1055/s-2003-44375
日期:——
Methods for the synthesis of 1,3-dienes by intermolecular enyne metathesis are described. A brief overview of enyne metathesis is provided with a discussion of the scope and limitations with respect to reactants and catalyst. The surge of recent interest in metathesis generally and the cross enyne metathesis specifically, has closely matched the development of the functional group-tolerant Grubbs’ carbene catalysts.
Stereoconvergent Synthesis of
<i>Z</i>
‐1,3‐Disubstituted‐1,3‐Dienes by Uphill Photocatalysis
作者:Steven T. Diver、Elise Glickert、Laurence N. Rohde、Thérèse Wild
DOI:10.1002/chem.202202635
日期:2023.1.2
Isomeric mixtures of 1,3-dienes were selectively isomerized to their Z-isomers by uphill photocatalysis using blue LEDs and a catalytic amount of Ru(bpy)32+(PF6−)2 as the triplet sensitizer. It proved possible to directly convert alkyne and 1-alkene to Z-1,3-dienes by a one-pot procedure, offering a practical approach to Z-1,3-dienes which cannot be made directly by ene-yne metathesis.
使用蓝色 LED 和催化量的 Ru(bpy) 3 2+ (PF 6 - ) 2作为三重态敏化剂,通过上坡光催化将 1,3-二烯的异构混合物选择性异构化为其 Z 异构体。事实证明,通过一锅法将炔烃和 1-烯烃直接转化为 Z-1,3-二烯是可能的,为 Z-1,3-二烯提供了一种实用的方法,而 Z-1,3-二烯不能通过烯-炔复分解反应直接制备。