Efficient Synthesis of Functionalized Aziridinium Salts
作者:Hyun-Soon Chong、Hyun A. Song、Mamta Dadwal、Xiang Sun、Inseok Sin、Yunwei Chen
DOI:10.1021/jo901893n
日期:2010.1.1
Various aziridiniumsalts were efficiently prepared from bromination of a series of backbone substituted N,N-bisubstituted β-amino alcohols and isolated via flash column chromatography. The effect of C-substitution, N-substitution, solvent, leaving group, and counteranions on formation of the isolable aziridiniumsalts was investigated.
从一系列骨架取代的N , N -双取代β-氨基醇的溴化反应有效地制备了各种氮丙啶盐,并通过快速柱色谱法进行分离。研究了C取代、N取代、溶剂、离去基团和抗衡阴离子对可分离的氮丙啶盐形成的影响。
Application of aziridinium ring opening for preparation of optically active diamine and triamine analogues: highly efficient synthesis and evaluation of DTPA-based MRI contrast enhancement agents
作者:Xiang Sun、Yunwei Chen、Ningjie Wu、Chi Soo Kang、Hyun A. Song、Shengnan Jin、Yao Fu、Henry Bryant、Joseph A. Frank、Hyun-Soon Chong
DOI:10.1039/c5ra11306g
日期:——
Ring opening of aziridinium ions with nitrogen nucleophiles was applied to the highly efficient synthesis of optically active vicinal diamines and diethylene triamine pentaacetic acid (DTPA) analogues as potential magnetic resonance imaging (MRI) contrast enhancement agents. The synthetic method features a column-free isolation of the regiospecific and stereospecific nucleophilic substitution products