Generations and Reactions of<i>N</i>-(<i>t</i>-Butylsulfonyl)aziridinyllithiums Using Microreactors
作者:Aiichiro Nagaki、Eiji Takizawa、Jun-ichi Yoshida
DOI:10.1246/cl.2009.1060
日期:2009.11.5
by the reaction of N-Bus-2-phenylaziridine with n-BuLi in a microflow system at -28 °C, although much lower temperatures such as —78 °C are needed for batch reactors. Subsequent reactions with various electrophiles gave the corresponding α-substituted N-Bus-2-phenylaziridines. Deprotonation of N-Bus-aziridine with s-BuLi was also achieved by using a microflow system at —78 °C, and the reaction of the
N-叔丁基磺酰基(Bus)-α-苯基氮丙啶基锂通过 N-Bus-2-苯基氮丙啶与正丁基锂在 -28 °C 的微流系统中反应有效生成,尽管温度低得多,例如 -78 °C需要间歇式反应器。随后与各种亲电试剂反应得到相应的 α-取代 N-Bus-2-苯基氮丙啶。N-Bus-氮丙啶与 s-BuLi 的去质子化也是通过使用微流系统在 -78 °C 下实现的,所得 N-Bus-氮丙啶基锂与亲电试剂反应得到取代的 N-Bus-氮丙啶。
One-Carbon Homologation of <i>N</i>-Sulfonylaziridines to Allylic Amines Using Dimethylsulfonium Methylide
作者:David M. Hodgson、Matthew J. Fleming、Steven J. Stanway
DOI:10.1021/ol051124p
日期:2005.7.1
[reaction: see text]. Regio- and stereodefined allylic N-sulfonylamines are synthesized in high yields and under experimentally straightforward conditions by reaction of N-sulfonylaziridines with excess dimethylsulfoniummethylide.
Synthesis of Optically Active Arylaziridines by Regio- and Stereospecific Lithiation of <i>N</i>-Bus-Phenylaziridine
作者:Biagia Musio、Guy J. Clarkson、Michael Shipman、Saverio Florio、Renzo Luisi
DOI:10.1021/ol802487v
日期:2009.1.15
α,α-Disubstituted aziridines can be produced in good yields by selective lithiation of N-tert-butylsulfonyl-2-phenylaziridine (n-BuLi/TMEDA, Et2O) at the benzylic position and subsequent trapping with a range of electrophiles. Repetition of the lithiation/electrophilic trapping sequence provides a stereocontrolled route to trisubstituted aziridines. Using (R)-N-tert-butylsulfonyl-2-phenylaziridine