Cu(OAc)<sub>2</sub>/DABCO-mediated domino reaction of vinyl malononitriles with cyclic sulfamidate imines: access to 6-hydroxyaryl-2-aminonicotinonitriles
A novel Cu(II)–salt/DABCO-mediated one-pot access to a myriad of highly substituted biologically relevant 2-aminonicotinonitriles possessing a resourceful phenolic moiety with satisfactory yields is reported. This method involves cyclic sulfamidate imines as 1C1N sources and different kinds of acyclic/cyclic vinyl malononitriles as 4C sources for pyridine synthesis via a vinylogous Mannich-cycloaromatization
Visible-light driven electron–donor–acceptor (EDA) complex-initiated synthesis of thio-functionalized pyridines
作者:Hirendra Nath Dhara、Amitava Rakshit、Dinabandhu Barik、Koustuv Ghosh、Bhisma K. Patel
DOI:10.1039/d3cc01678a
日期:——
A visible-light-induced electron–donor–acceptor (EDA)-aggregated radical cyclization between (E)-2-(1,3-diarylallylidene)malononitriles and thiophenols leads to poly-functionalized thio pyridines.