Crystal Structure of 2-Ethylimidazole-1-sulfonyl Azide: A New Azidation Reagent

Author： Laus Gerhard   Adamer Verena   Hummel Michael   Kahlenberg Volker   Wurst Klaus   Nerdinger Sven   Schottenberger Herwig  

Publisher： MDPI

E-ISSN： 2073-4352|2|1|118-126

ISSN： 2073-4352

Source： Crystals, Vol.2, Iss.1, 2012-03, pp. : 118-126

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Abstract

Crystalline 2-ethylimidazole-1-sulfonyl azide was designed as a convenient reagent with improved thermal stability for electrophilic azidation of carbanions. The compound crystallized in the monoclinic space group P21/c. The molecules are arranged into chains by short C–H...O contacts along a two-fold screw axis. The quaternary 1-azidosulfonyl-2-ethyl-3-methylimidazolium tetrafluoroborate crystallized in Fdd2 with two independent ion pairs which engage in C–H...F interactions.

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