Synthesis of Enantiopure <i>tert</i>-Butanesulfinamide from <i>tert</i>-Butanesulfinyloxazolidinone
作者:Yong Qin、Canhui Wang、Zhiyan Huang、Xue Xiao、Yaozhong Jiang
DOI:10.1021/jo048576k
日期:2004.11.1
three-step procedure for the preparation of enantiopure tert-butanesulfinamide 6 in 51% overall yield is described starting from (1R,2S)-N-Cbz-1,2-diphenylaminoethanol. The key step is the reaction of tert-butylmagnesium chloride with N-Cbz-4,5-diphenyl-1,2,3-oxathiazolidine-2-oxide 2 to afford the optical pure tert-butylsulfinyl-4,5-diphenyl-1,3-oxazolidinone 5 via an 1,5-alkoxy anion rearrangement, which
从(1R,2S)-N -Cbz-1,2-二苯基氨基乙醇开始,描述了以51%的总收率制备对映体纯的叔丁烷亚磺酰胺6的三步程序。关键步骤是叔丁基氯化镁与N -Cbz-4,5-二苯基-1,2,3-氧杂噻唑烷-2-氧化物2的反应,得到光学纯的叔丁基亚磺酰基-4,5-二苯基-1 1,3-烷氧基阴离子重排生成3-3-恶唑烷酮5,然后将其与液氨中的LiNH 2进行氨水解,得到(R)-叔丁基-丁烷亚磺酰胺6。