A convenient synthetic route to 2-aryl-N-tosylazetidines and their ZnX2 (X=I, OTf) mediated regioselective nucleophilic ring opening reactions: synthesis of γ-iodoamines and tetrahydropyrimidines
作者:Manas K. Ghorai、Kalpataru Das、Amit Kumar、Animesh Das
DOI:10.1016/j.tetlet.2006.05.058
日期:2006.7
general and convenient synthetic route to various 2-aryl-N-tosylazetidines has been described. Their ZnX2 (X = I, OTf) mediated nucleophilic ring opening with halides and [4+2] cycloaddition reactions with various nitriles have been achieved to afford γ-iodoamines and substituted tetrahydropyrimidines, respectively, in good to excellent yields. A mechanism for the cycloaddition reaction is proposed
Branched Amine Synthesis via Aziridine or Azetidine Opening with Organotrifluoroborates by Cooperative Brønsted/Lewis Acid Catalysis: An Acid-Dependent Divergent Mechanism
作者:Truong N. Nguyen、Jeremy A. May
DOI:10.1021/acs.orglett.8b01394
日期:2018.6.15
A practical catalytic method to synthesize β,β- and γ,γ-substituted amines by opening aziridines and azetidines, respectively, using alkenyl, alkynyl, or aryl/heteroaryl trifluoroborate salts is described. This reaction features simple open-flask reaction conditions, the use of transition-metal-free catalysis, complete regioselectivity, and high diastereoselectivity. Preliminary mechanistic studies
Cobalt-catalyzed amination of aziridines and azetidines toward 1,2- and 1,3-diamines
作者:Ling-Chao Cheng、Zhihua Wang、Xinglei He、Wangfu Liang、Ke-Yin Ye
DOI:10.1039/d4ob00168k
日期:——
A cobalt-catalyzed ring opening, nucleophilic amination of aziridines and azetidines with N-fluorosulfonamides has been established toward a wide range of 1,2- and 1,3-diamine derivatives in moderate to good yields under mild conditions.