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13.28.1.1.3.1.1 Method 1: 1,2,3,4-Oxatriazolium-5-olates from N-Nitrosohydrazines and Phosgene

DOI: 10.1055/sos-SD-013-01368

Begtrup, M.Science of Synthesis, (200413826.

3-Methyl-1,2,3,4-oxatriazolium-5-olate (5, R1=Me; Y=O), has been prepared by another method from N-nitroso-N-methylhydrazine 22 and phosgene. The reaction is suggested to proceed through an intermediate isocyanate 23 (Scheme 6).[‌37‌]

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