Asymmetric Hydrogenation of Vinylthioethers: Access to Optically Active 1,5-Benzothiazepine Derivatives
作者:Wei Li、Christoph Schlepphorst、Constantin Daniliuc、Frank Glorius
DOI:10.1002/anie.201512032
日期:2016.3.1
method provides an efficient approach to optically active 1,5‐benzothiazepines featuring stereocenters with C−S bonds. Excellent enantioselectivities (up to 95 % ee) and high yields (up to 99 %) were obtained for a variety of substrates bearing a range of useful functional groups. Moreover, this methodology could be directly applied to the synthesis of the antidepressant drug R‐(−)‐thiazesim.
使用钌(II)NHC络合物开发了乙烯基硫醚的新型不对称氢化反应。该方法提供了一种具有立体中心带有CS键的旋光1,5-苯并噻嗪类化合物的有效方法。对于带有一系列有用官能团的多种底物,均具有出色的对映选择性(最高95% ee)和高产率(最高99%)。此外,该方法可直接应用于抗抑郁药R -(-)-噻嗪酮的合成。