2-Benzylidene-4,4-difluorodihydrofuran-3(2H)-ones were synthesised in 58―86% yield via phosphine-promoted cyclisation of β-hydroxy-α,α-difluoroynones. The benzylidene group was found to be a suitable masked carbonyl group, thereby allowing for the validation of a novel route to 3,3-difluoro-2-hydroxy-γ-lactols.
2-亚苄基-4,4-二
氟二氢
呋喃-3(2H)-酮通过膦促进的β-羟基-α,α-二
氟炔酮环化反应以58-86%的产率合成。亚苄基被发现是一个合适的掩蔽羰基,从而允许验证一种新的途径来获得 3,3-二
氟-2-羟基-γ-内酯。