The present invention is directed to methods for the asymmetric synthesis of esketamine. The present invention is further directed to key intermediates in the asymmetric esketamine synthesis. In one embodiment, the invention is an asymmetric synthesis of esketamine comprising the conversion of (S)-2'-chloro-2-methoxy-3,4,5,6-5 tetrahydro-[1,1'-biphenyl]-3-yl carbamate to (S)-2'-chloro-1-isocyanato-6-methoxy- 1,2,3,4-tetrahydro-1,1'-biphenyl.
本发明涉及一种制备左旋
氨基甲酸氯胺酮的不对称合成方法。本发明还涉及不对称
氨基甲酸氯胺酮合成中的关键中间体。在一种实施例中,本发明是一种不对称合成左旋
氨基甲酸氯胺酮的方法,包括将(S)-2'-
氯-2-甲氧基-3,4,5,6-5-四氢-[1,1'-
联苯]-3-基
氨基甲酸酯转化为(S)-2'-
氯-1-
异氰酸酯基-6-甲氧基-1,2,3,4-四氢-1,1'-
联苯。