Click Chemistry Inspired Synthesis of Morpholine-Fused Triazoles
摘要:
The synthesis of triazolyl azido alcohols from terminal alkyne via oxirane ring-opening of epichlorohydrin, followed by click reaction with alkynes, and subsequent azidation of chlorohydroxy triazoles was achieved under a one-pot methodology. The developed triazolyl azido alcohols were further utilized for the synthesis of a diverse range of morpholine-fused triazoles of chemotherapeutic value. The structure of all developed compounds has been elucidated using IR. NMR, MS, and elemental analysis, where four of them have been characterized by single-crystal X-ray analysis.
Tandem Epoxide or Aziridine Ring Opening by Azide/Copper Catalyzed [3+2] Cycloaddition: Efficient Synthesis of 1,2,3-Triazolo β-Hydroxy or β-Tosylamino Functionality Motif
[Graphics]A novel and practical procedure for the synthesis of small molecules possessing beta-hydroxy or N-tosylamino 1,2,3-triazole motif by azidation of epoxides or N-tosylaziridines with sodium azide followed by "click reaction" using eco-friendly PEG-400 as a reaction medium in the presence of 5 mol % of CuI is described. Enantiomerically pure epoxide and N-tosylaziridines were afforded in high yield with excellent ee values maintaining complete stereospecificity.
Click Chemistry Inspired Synthesis of Morpholine-Fused Triazoles
作者:Kunj B. Mishra、Vinod K. Tiwari
DOI:10.1021/jo500890w
日期:2014.6.20
The synthesis of triazolyl azido alcohols from terminal alkyne via oxirane ring-opening of epichlorohydrin, followed by click reaction with alkynes, and subsequent azidation of chlorohydroxy triazoles was achieved under a one-pot methodology. The developed triazolyl azido alcohols were further utilized for the synthesis of a diverse range of morpholine-fused triazoles of chemotherapeutic value. The structure of all developed compounds has been elucidated using IR. NMR, MS, and elemental analysis, where four of them have been characterized by single-crystal X-ray analysis.
Uniform copper nanoparticles as an inexpensive and efficient catalyst for synthesis of novel β-carbonyl-1, 2, 3-triazoles in water medium
prepared via ball milling for synthesis of β-carbonyl 1, 2, 3-triazoles from azido alcohol by click reaction in water. An extensive range of raw materials such as sodium azide, phenacyl bromide, epichlorohydrin, and terminal alkynes were used. Complete reduction of CuO in presence of NaBH4 was done via ball milling with a ball-to-powder weight ratio of 50:1 under air atmosphere at roomtemperature. The