SnAP reagents for the one-step synthesis of medium-ring saturated N-heterocycles from aldehydes
作者:Cam-Van T. Vo、Michael U. Luescher、Jeffrey W. Bode
DOI:10.1038/nchem.1878
日期:2014.4
Interest in saturated N-heterocycles as scaffolds for the synthesis of bioactive molecules is increasing. Reliable and predictable synthetic methods for the preparation of these compounds, especially medium-sized rings, are limited. We describe the development of SnAP (Sn amino protocol) reagents for the transformation of aldehydes into seven-, eight- and nine-membered saturated N-heterocycles. This
对饱和 N-杂环作为合成生物活性分子的支架的兴趣正在增加。用于制备这些化合物(尤其是中等大小的环)的可靠且可预测的合成方法是有限的。我们描述了用于将醛转化为七、八和九元饱和 N-杂环的 SnAP(Sn 氨基协议)试剂的开发。该过程在温和的室温条件下进行,并提供出色的底物范围和官能团耐受性。空气和水分稳定的 SnAP 试剂是通过简单的反应序列从廉价的起始材料以多克规模制备的。这些新的试剂和工艺允许广泛使用的芳基、杂芳基和脂肪族醛转化为多种 N-杂环,包括二氮杂、恶氮杂、重氮烷、