Document is current

Facile and simple synthesis of pyrimido[4,5-d]pyrimidinones and pyrano[2,3-d]pyrimidinones catalyzed by nano-sized NS-C4(DABCO-SO3H)2·4Cl

Crossref DOI link: https://doi.org/10.1007/s13738-017-1074-4

Published Online: 2017-02-10

Published Print: 2017-06

Update policy: https://doi.org/10.1007/springer_crossmark_policy