1,3‐Difunctionalization of Aminocyclopropanes via Dielectrophilic Intermediates
作者:Ming‐Ming Wang、Jérôme Waser
DOI:10.1002/anie.201907060
日期:2019.9.23
ring-opening strategy to transform acyl, sulfonyl or carbamate protected aminocyclopropanes into 1,3-dielectrophilic carbon intermediates bearing a halide atom (Br, I) and a N,O-acetal. Replacing the alkoxy group of the N,O-acetal can be achieved under acidic conditions through an elimination-addition pathway, while substitution of the halides by nucleophiles can be done under basic conditions through a SN 2 pathway
Difunctionalization of Cyclopropyl Amines with <i>N</i>-Iodosuccinimide (NIS) or in Situ Formed Cyanogen Iodide (ICN)
作者:Qile Wang、Nan Zheng
DOI:10.1021/acs.orglett.9b03922
日期:2019.12.20
We report herein a 1,3-difunctionalization of cyclopropylamines that serve as a π nucleophile in a two-electron (2e) SN2-like ring opening pathway. N-Iodosuccinimide (NIS) or in situ generated cyanogen iodide (ICN) is employed as electrophilic iodinating reagents in conjunction with TMSCN or succinimide to furnish multiple pairs of functional groups disposed in a 1,3-manner. This 2e ring opening manifold