叠氮化物与炔烃的铜催化的“点击”反应已成为在药物化学中构建1,4-取代的1 H -1,2,3-三唑的流行方法,并且该方法在实验室规模内得到了应用。新型大环内酯类化合物的制备1。然而,关键叠氮化物组分的制造以及其随后在铜催化剂的存在下的大规模使用与潜在的安全隐患有关。因此,开发了一种序列,其中通过α,α-二氯甲苯磺酰基cyclo与胺的环缩合,完成了1,4-取代的1 H -1,2,3-三唑在1中的构建。
Synthesis of an Antibacterial Compound Containing a 1,4-Substituted 1<i>H</i>-1,2,3-Triazole: A Scaleable Alternative to the “Click” Reaction
作者:Roger Hanselmann、Gabriel E. Job、Graham Johnson、Rongliang Lou、Jacek G. Martynow、Maxwell M. Reeve
DOI:10.1021/op900252a
日期:2010.1.15
The copper-catalyzed “click” reaction of an azide with an alkyne has become a popular method to build up 1,4-substituted 1H-1,2,3-triazoles in medicinal chemistry and this approach was used on a laboratory scale during the preparation of novel macrolide 1. However, the manufacture of the key azide component, as well as its subsequent use in the presence of a copper catalyst on a large scale, was associated
叠氮化物与炔烃的铜催化的“点击”反应已成为在药物化学中构建1,4-取代的1 H -1,2,3-三唑的流行方法,并且该方法在实验室规模内得到了应用。新型大环内酯类化合物的制备1。然而,关键叠氮化物组分的制造以及其随后在铜催化剂的存在下的大规模使用与潜在的安全隐患有关。因此,开发了一种序列,其中通过α,α-二氯甲苯磺酰基cyclo与胺的环缩合,完成了1,4-取代的1 H -1,2,3-三唑在1中的构建。
Traceless Tosylhydrazone-Based Triazole Formation: A Metal-Free Alternative to Strain-Promoted Azide-Alkyne Cycloaddition
作者:Sander S. van Berkel、Sebastian Brauch、Lars Gabriel、Michael Henze、Sebastian Stark、Dimitar Vasilev、Ludger A. Wessjohann、Muhammad Abbas、Bernhard Westermann
DOI:10.1002/anie.201108850
日期:2012.5.29
Triple‐T trick! Traceless tosylhydrazone‐based triazoleformation is readily achieved by reacting primary amines with functional α,α‐dichlorotosylhydrozones under ambient conditions. This fast and efficient alternative affords exclusively 1,4‐substituted triazole “click products” with complete retention of configuration. Primary amines, inherent to many natural products, can be modified in this way