5333-62-0Relevant articles and documents
Temporal control in tritylation reactions through light-driven variation in chloride ion binding catalysis-a proof of concept
Bari, Naimat K.,Grewal, Surbhi,Kumar, Himanshu,Roy, Saonli,Saraswat, Mayank,Sinha, Sharmistha,Venkataramani, Sugumar
, p. 7027 - 7033 (2020/11/09)
Tripodal triazole-linked azo(hetero)arene-based photoswitchable catalysts T1-5 have been designed, synthesized and optimized for the tritylation reaction of benzylamine (BzNH2). The tritylation reaction rates/yields achieved by light induced isomerization are compared between the native and photoswitched states of the catalyst T1. This concept of controlling the tritylation reaction rates with light has also been extended to additional substrates. The critical role of the triazole C-H?Cl- interactions has been confirmed by a combination of spectroscopic, calorimetric and computational studies. Also, the effect of variation in the binding affinities between the native and photoswitched states of the catalyst at room temperature in the temporal control of the catalysis has been demonstrated. This journal is
Stereoselective and Enantiospecific Mono- and Bis-C?H Azidation of Tr?ger Bases: Insight on Bridgehead Iminium Intermediates and Application to Anion-Binding Catalysis
Bosmani, Alessandro,Pujari, Sandip A.,Besnard, Céline,Guénée, Laure,Poblador-Bahamonde, Amalia I.,Lacour, Jér?me
supporting information, p. 8678 - 8684 (2017/06/30)
In the context of Tr?ger base chemistry, regio- and stereoselective Csp3?H azidation reactions are reported. Azide functional groups are introduced at either one or the two benzylic positions selectively. Mild conditions and good yields are aff
Gold(I)-catalyzed synthesis of unsymmetrical ethers using alcohols as alkylating reagents
Liu, Yongxiang,Wang, Xiaoyu,Wang, Yanshi,Du, Chuan,Shi, Hui,Jin, Shengfei,Jiang, Chongguo,Xiao, Jianyong,Cheng, Maosheng
, p. 1029 - 1036 (2015/03/30)
A microwave-irradiated alcohol-protecting strategy based on gold catalysis utilizing benzyl alcohol, tert-butyl alcohol and triphenylmethanol as alkylating reagents has been developed. This protecting strategy has wide functional group tolerance with satisfactory yields for the majority of the selected alcohols. The mechanism of this transformation was probed with oxygen-18 isotope labelled alcohols assisted by GC-MS techniques and chemical kinetic experiments. This strategy provides an efficient, straightforward and alternative approach to the preparation of benzyl, tert-butyl and trityl ethers in organic synthesis.