aminolysis of 3,4‐epoxy amines has been achieved. Key features of this reaction are (1) chemoselective activation of epoxides in the presence of unprotected aliphatic amines in the same molecules by a La(OTf)3 catalyst and (2) excellent regioselectivity for anti‐Baldwin 5‐endo‐tet cyclization. This reaction affords 3‐hydroxy‐2‐alkylpyrrolidines stereospecifically in high yields. DFT calculations revealed
已经实现了3,4-环氧胺的高度区域选择性的分子内
氨解。该反应的主要特征是(1)在由拉(OTF)存在下,在相同的分子无保护的脂族胺的
环氧化物的
化学选择性活化3抗鲍德温-5-催化剂和(2)优良的区位选择性内切- TET环化。该反应可立体高产率提供3-羟基-2-烷基
吡咯烷。DFT计算表明,区域选择性可能归因于环氧胺底物的变形能。该反应的使用通过抗痉挛剂
溴化芬尼的首次对映选择性合成得到证明。