Asymmetric Syntheses of S,S-Dialkyl-Substituted Sulfoximines and Related Heterocycles
作者:Carsten Bolm、Ankur Pandey、Matthew McGrath、Olga García Mancheño
DOI:10.1055/s-0030-1260260
日期:2011.12
oxidation procedure as key steps. Additionally, a variety of 2-oxa-2-alkyl 3,4-dihydro 2,1-benzothiazines are synthesized via intramolecular metal-catalyzed N-arylation of appropriately functionalized sulfoximines with tethered 2-bromoaryl substituents. In turn, the sulfoximines are prepared by lithiation-alkylation sequences including enantioselective deprotonation steps or the use of an optically
基于手性碱的不对称脱对称或作为关键步骤的对映选择性氧化方法,可制备基于亚砜亚胺的肉豆蔻酸类似物的对映体富集形式。另外,通过分子内金属催化的适当官能化的亚砜亚胺与束缚的2-溴芳基取代基的合成,合成了各种2-氧杂-2-烷基3,4-二氢2,1-苯并噻嗪。继而,通过包括对映选择性去质子化步骤或使用旋光亚砜的锂化-烷基化序列来制备亚砜肟。使用这种方法,可及的3,4-二氢2,1-苯并噻嗪衍生物的范围得以扩大。 烷基亚砜亚胺-二氢苯并噻嗪-脱对称-环化-铜