Tosyl azide

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Tosyl azide
Tosyl azide.svg
CAS number 941-55-9 YesY
PubChem 13661
ChemSpider 13072
EC number 213-381-5
Jmol-3D images Image 1
Molecular formula C7H7N3O2S
Molar mass 197.21 g mol−1
Appearance Oily colorless liquid
Density 1.286 g/cm3
Melting point 21 to 22 °C (70 to 72 °F; 294 to 295 K)
Boiling point 110–115 °C at 0.001 mmHg
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Tosyl azide is a reagent used in organic synthesis.[1]


Tosyl azide is used for the introduction of azide and diazo functional groups.[1] It is also used as a nitrene source and as a substrate for [3+2] cycloaddition reactions.[1]


Tosyl azide can be prepared by the reaction of tosyl chloride with sodium azide in aqueous acetone.[2]


Tosyl Azide is one of the more stable azide compounds but is still regarded as a potential explosive and should be carefully stored.

See also[edit]


  1. ^ a b c d Heydt, H.; Regitz, M.; Mapp, A. K.; Chen, B. (2008). "p-Toluenesulfonyl Azide". Encyclopedia of Reagents for Organic Synthesis. doi:10.1002/047084289X.rt141.pub2. 
  2. ^ Curphey, T. J. (1981). "Preparation of p-Toluenesulfonyl Azide. A Cautionary Note". Organic Preparations and Procedures International 13 (2): 112–115. doi:10.1080/00304948109356105.