Novel photoadditions of tertiary amines to the α-position of α,β-unsaturated γ,δ-epoxy nitriles
作者:Keitaro Ishii、Satoshi Hakamada、Mayumi Nagano、Masahiro Noji、Shigeo Sugiyama、Masashi Kotera、Masanori Sakamoto
DOI:10.1039/b110372e
日期:2002.6.27
photoreactions of α,β-unsaturated γ,δ-epoxy nitriles 1, 2, 13 and 16 with triethylamine give rise to novel 1 ∶ 1 α-adducts (e.g., 5) efficiently. After treatment with silica gel, the adducts undergo retro-Michael reaction leading to the corresponding α-alkylidenenitrile derivatives (e.g., 3). The epoxy nitrile 1 also reacts with various tertiary amines to afford α-adducts. The reaction of 1 and the silylamine
α,β-不饱和γ,δ-环氧的光反应 腈 1,2,13和16与三乙胺引起新的1:1的α-加合物(例如,5)有效。治疗后硅石凝胶,该加合物经历逆向迈克尔反应,导致相应的α-alkylidenenitrile衍生物(例如,3)。环氧腈 1也会与各种反应叔胺提供α-加合物。1与甲硅烷基胺24的反应主要产生亚甲基衍生物22和甲硅烷基化合物25 与处理后硅石凝胶。该反应可以通过来自胺 到兴奋的环氧树脂 腈。