<i>N</i>-(<i>tert</i>-Butoxycarbonyl)-<i>N</i>-[(triethylenediammonium)sulfonyl]azanide: A Convenient Sulfamoylation Reagent for Alcohols
作者:Ian Armitage、Alexander M. Berne、Eric L. Elliott、Mingkun Fu、Frederick Hicks、Quentin McCubbin、Lei Zhu
DOI:10.1021/ol3009683
日期:2012.5.18
A convenient and efficient procedure is described for the sulfamoylation of alcohols using N-(tertbutoxycarbonyl)-N-[(triethylenediammonium)sulfonyl]azanide (1). The ambient temperature stable reagent 1 reacts with phenols as well as primary and secondary alcohols to give high to modest yields. The relative reaction rate of substrates was determined (primary > phenol > secondary tertiary). The reagent's utility as a selective sulfamoylation reagent with polyols is also demonstrated.
Iron-Catalyzed Intramolecular Amination of Aliphatic C–H Bonds of Sulfamate Esters with High Reactivity and Chemoselectivity
作者:Wei Liu、Dayou Zhong、Cheng-Long Yu、Yan Zhang、Di Wu、Ya-Lan Feng、Hengjiang Cong、Xiuqiang Lu、Wen-Bo Liu
DOI:10.1021/acs.orglett.9b00660
日期:2019.4.19
It is challenging to develop simple and low cost catalytic systems while maintaining high reactivity and selectivity. An iron-catalyzed intramolecular C–H amination of sulfamate esters using simple and cheap ligands is reported with general substrate scope (31 examples, up to 95% yield). The addition of second ligand, bipyridine, is able to accelerate the reaction and increase the yield. The ready