摘要 开发了一种用 H 2 O 2以中等至良好产率将硫化物氧化成亚砜和砜的直接选择性方法。反应在室温下在2 mol% VO(acac) 2 的存在下进行。所有亚砜和砜均采用气相色谱法检测,2-甲基苄基4-甲基苯基砜、4-甲基苄基4-甲基苯基砜、2-溴苄基4-甲基苯基砜和4-叔丁基苄基苄基砜的分子结构由下式测定单晶 X 射线晶体学。
Investigation of steric and electronic effects in the copper-catalysed asymmetric oxidation of sulfides
作者:Graham E. O'Mahony、Kevin S. Eccles、Robin E. Morrison、Alan Ford、Simon E. Lawrence、Anita R. Maguire
DOI:10.1016/j.tet.2013.08.063
日期:2013.11
in the copper-catalysed asymmetricoxidation of aryl benzyl, aryl alkyl and alkyl benzyl sulfides have been investigated. The presence of an aryl group directly attached to the sulfur is essential to afford sulfoxides with high enantioselectivities, with up to 97% ee for 2-naphthyl benzyl sulfoxide, the highest enantioselectivity achieved to date for copper-catalysed asymmetric sulfoxidation. In contrast
The present invention relates to disubstituted 5-fluoro-pyrimidines of general formula (I) as described and defined herein, and methods for their preparation, their use for the treatment and/or prophylaxis of disorders, in particular of hyper-proliferative disorders and/or virally induced infectious diseases and/or of cardiovascular diseases. The invention further relates to intermediate compounds useful in the preparation of said compounds of general formula (I).