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。