Ontology highlight
ABSTRACT:
SUBMITTER: Yen WP
PROVIDER: S-EPMC6154590 | biostudies-literature | 2017 May
REPOSITORIES: biostudies-literature
Molecules (Basel, Switzerland) 20170516 5
A novel one-flask synthetic method was developed in which 5-aminopyrazoles were reacted with <i>N,N</i>-substituted amides in the presence of PBr₃. Hexamethyldisilazane was then added to perform heterocyclization to produce the corresponding pyrazolo[3,4-<i>d</i>]pyrimidines in suitable yields. These one-flask reactions thus involved Vilsmeier amidination, imination reactions, and the sequential intermolecular heterocyclization. To study the reaction mechanism, a series of 4-formyl-1,3-diphenyl- ...[more]