Abstract:
The consecutive alkylation of 9-isopropyl-6-phenyl-9H-purine with methyl 2-diazo-3,3,3-trifluoropropionate and diethyl diazomalonate proceeds at the phenyl substituent firstly viaortho-C–H activation under chelation-assistance of the purine core, followed by classical electrophilic metal carbenoid insertion to the C−H bond of a malonate moiety.
Citation:
M. M. Vinogradov, D. V. Vorobyeva, Yu. V. Nelyubina, S. N. Osipov, D. A. Loginov, “Unusual multiple insertion of diazo carbonyl compounds into (purin-6-yl)benzene derivative”, Mendeleev Commun., 30:4 (2020), 494–495
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https://www.mathnet.ru/eng/mendc1234
https://www.mathnet.ru/eng/mendc/v30/i4/p494
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