PECULIAR ELECTROPHILIC HETEROCYCLIZATION OF 5-ALLYL-6-THIOXOPYRAZOLO[3,4-<i>d</i>]PYRIMIDIN-4-ONE
DOI:
https://doi.org/10.1007/478Keywords:
oxazolinopyrazolopyrimidine, pyrazolo[3, 4-d]pyrimidine, thiazolinopyrazolopyrimidine, haloheterocyclizationAbstract
Pyrazolo[3,4-d]thiazolo[3,2-a]pyrimidines were formed on halogenation of 5-allyl-6-thioxopyrazolo[3,4-d]-pyrimidin-4-one, whereas 5-ethylsulfanyl-2-halomethyl[1,3]oxazolo[3,2-c]pyrazolo[4,3-e]pyrimidinium trihalogenides were formed from 5-allyl-6-ethylsulfanyl-1,5-dihydro-4H-pyrazolo[3,4‑d]pyrimidin-4-one.
Authors: O. V. Svaljavyn, M. Yu. Onysko, A. V. Turov, Yu. G. Vlasenko, and V. G. Lendel
English Translation in Chemistry of Heterocyclic Compounds, 2013, 49 (3), pp 491-495