A new preparation of cis-N-sulfonylaziridines from N-sulfonylaldimines using trimethylsilyldiazomethane
作者:Rina Hori、Toyohiko Aoyama、Takayuki Shioiri*
DOI:10.1016/s0040-4039(00)01601-4
日期:2000.12
Trimethylsilyldiazomethane smoothly reacts with N-sulfonylaldimines to give 2-substituted N-sulfonyl-3-trimethylsilylaziridines in good yields with high cis selectivity.
Highly Selective Aziridination of Imines Using Trimethylsilyldiazomethane and Applications of <i>C</i>-Silylaziridines in Synthesis
作者:Varinder K. Aggarwal、Marco Ferrara
DOI:10.1021/ol006772h
日期:2000.12.1
[GRAPHICS]Trimethylsilyldiazomethane has been found to add directly to N-sulfonyl (Ts and SES) imines to afford aziridines in good yields and high cis stereoselectivities. The silyl group can be substituted by treatment with a fluoride source and electrophiles again with high selectivity. Complete regioselectivity is observed in ring opening of these aziridines with nucleophiles.
Highly Diastereoselective Aziridination of Imines with Trimethylsilyldiazomethane. Subsequent Silyl Substitution with Electrophiles, Ring Opening, and Metalation of <i>C</i>-SilylaziridinesA Cornucopia of Highly Selective Transformations
作者:Varinder K. Aggarwal、Emma Alonso、Marco Ferrara、Sharon E. Spey
DOI:10.1021/jo016312h
日期:2002.4.1
C-silylaziridines was investigated. Treatment with F(-) (tetrabutylammonium triphenyldifluorosilicate was used) in the presence of aldehydes gave the alpha-hydroxyaziridines in high yield and high diastereoselectivity (86:14-98:2) for the newly created stereogenic center. Complete retention of configuration was observed in the substitution of the silyl group with electrophiles in all cases. Trapping with deuterium