74795-79-2Relevant articles and documents
Stereoelectronic Control in Ring Opening of Bridge-head Nitrogen Containing Fused Azolium Salts
Messmer, Andras,Hajos, Gyoergy,Timari, Geza
, p. 8451 - 8458 (2007/10/02)
Reaction of tetrazolopyridinium salts 1 with nucleophiles proceeds through the neutral intermediate 2.Ring opening of this leads to hetarylbutadienes (3, 4, 5) of different geometries.Experimental support has been provided for the theoretical supposition