J. Mendiola et al., Reaction of 2-bromomethylazoles and TosMIC: A domino process to azolopyrimidines. Synthesis of core tricycle of the variolins alkaloids, ORG LETT, 2(21), 2000, pp. 3253-3256
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A new reaction of N protected 2-bromomethylazoles and tosylmethyl isocyanid
e (TosMIC) leading to the preparation of azolopyrimidines is described. Thi
s domino sequence was used to synthesize the pyrido[3',2':4,5]pyrrolo[1,2-c
]pyrimidine core of alkaloids variolins from 4-methoxy-2-methylpyrrolo[2,3-
b]pyrimidine in two steps.