Synthesis of Heterocyclic-fused Imidazoles by Pyrolysis of N-Heterocyclic Isoxazol-5(2H)-ones
2014
The synthesis of heterocyclic-fused imidazoles was achieved by flash vacuum pyrolysis (FVP) of N-heterocyclic isoxazol-
5(2H)-ones via an iminocarbene intermediate. Unlike iminocarbenes generated from triazoles, no structural rearrangements
were observed during the current synthesis method. We also demonstrated that less volatile isoxazol-5(2H)-one
derivatives yield the corresponding imidazoles by condensed phase pyrolysis.
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