65957-22-4Relevant academic research and scientific papers
Access to Amidines and Arylbenzimidazoles: Zinc-Promoted Rearrangement of Oxime Acetates
Zhu, Zhongzhi,Cen, Jinghe,Tang, Xiaodong,Li, Jianxiao,Wu, Wanqing,Jiang, Huanfeng
, p. 2020 - 2031 (2018/04/09)
An efficient and straightforward zinc-promoted rearrangement of oxime acetates with arylamines for the synthesis of amidines has been developed under mild conditions. This process involves N?O/C?C bond cleavages and C?C/C?N bond formations. Various oxime
Facile one-pot syntheses of amidines and enamines from oximes via Beckmann rearrangement using trifluoromethansulfonic anhydride
Takuwa, Tomofumi,Minowa, Tomofumi,Onishi, Jim Yoshitaka,Mukaiyama, Teruaki
, p. 322 - 323 (2007/10/03)
Facile one-pot syntheses of amidines and enamines were achieved by trapping carbocation intermediates that were formed by Beckmann rearrangement of oximes with amines and carbon nucleophiles, respectively, under mild conditions.
Facile one-pot syntheses of amidines and enamines from oximes via Beckmann rearrangement using trifluoromethanesulfonic anhydride
Takuwa, Tomofumi,Minowa, Tomofumi,Onishi, Jim Yoshitaka,Mukaiyama, Teruaki
, p. 1717 - 1725 (2007/10/03)
Iminocarbocation intermediates were in situ-generated by treating various oximes with trifluoromethanesulfonic anhydride (Tf2O) in the presence of triethylamine in toluene and nucleophilic trapping with amines or sodium enolates under mild conditions afforded the corresponding amidines and enamines. Some of the thus-obtained enamines were converted to 2-substituted 4-oxo-3-quinolinecarboxylic acid derivatives by subsequent intramolecular Friedel-Crafts acylation.
Reactions of Carboxylic Acids with "Phosphonium Anhydrides"
Hendrickson, James B.,Hussoin, Md. Sajjat
, p. 1144 - 1149 (2007/10/02)
General considerations are outlined for a reagent to extract oxygen from organic molecules by an equivalent of dehydration.Reagents, (R3P+)2O, 2OTf-, were created for the purpose and subjected to a preliminary study.They were found to convert carboxylic acids readily and rapidly to anhydrides, esters, amides, amidines, benzimidazoles, and cyclic aryl ketones in good yields.
