作者:Lara Mata、Alberto Avenoza、Jesús H. Busto、Jesús M. Peregrina
DOI:10.1002/chem.201204392
日期:2013.5.17
Although 1,2‐cyclic sulfamidates derived from α‐methylisoserine undergo nucleophilic displacement at the quaternary center, to the best of our knowledge their behavior with amines as nucleophiles has never been explored. We have found that a broad range of amines can be used, demonstrating the scope of the reaction, and that excellent control of the chemoselectivity can be achieved. Application of
尽管衍生自α-甲基异丝氨酸的1,2-环氨基磺酸盐在四级中心发生亲核取代,但据我们所知,从未探讨过它们与胺作为亲核剂的行为。我们发现,可以使用广泛范围的胺,证明了反应的范围,并且可以实现对化学选择性的极好的控制。还介绍了该方法在合成手性α,β-二氨基酸和重要的哌嗪酮杂环中的应用。此外,我们已经发现,DMF和DMSO的行为不仅作为极性非质子溶剂也为○ -亲核试剂,使得氧原子的亲电的季中心掺入,与构型反转。