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Metal triflate catalyzed 1,2-bromoazidation of alkenes was performed using N-bromosuccinimide (NBS) and trimethylsilyl azide (TMSN3) as the bromine and azide sources, respectively. Among the metal triflates, Zn(OTf)2 was found to be the best catalyst. This catalytic process represents a highly regioselective, stereoselective and high yielding method for the synthesis of anti-1,2-bromoazides from a variety of alkenes including α,β-unsaturated carbonyl compounds. 相似文献
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Indranirekha Saikia 《Tetrahedron letters》2009,50(36):5083-761
A very rapid and efficient method has been developed for the synthesis of vicinal bromoazides directly from olefin using N,N-dibromo-p-toluenesulfonamide (TsNBr2) without any catalyst. The reaction is extremely fast which goes into completion instantaneously to produce bromoazides. This procedure is applicable to various olefins such as cinnamates, chalcone, styrenes, and acrylate to give the corresponding 1,2-bromoazide in an excellent yield. 相似文献
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