An efficient synthesis of trialkyl (E)-3-(3-Oxo-2-3,4-dihydro-2-(1H)-quinoxalinylidene)-prop-1-ene-1,2,3-tricarboxylate derivatives via a simple three-component reaction between benzene-1,2-diamines with dialkyl acetylenedicarboxylates in the presence of K2CO3-PEG catalytic system at 100 oC was reported. The desired products were obtained in excellent yields (88-92%). Various benzene-1,2-diamin...

Dedicated to the memory of Professor Richard Askey (1933–2019) and pay tribute Bateman Project. Harry planned his “shoe-boxes” project (accomplished after death as Higher Transcendental Functions, Vols. 1–3, 1953–1955, under editorship by A. Erdélyi) a “Guide Functions”. This inspired author use modified title present survey. Most standard (classical) Special Functions are representable in term...

We propose a description-logic style extension of OWL 2 with nominal schemas which can be used like“variable nominal classes”within axioms. This feature allows ontology languages to express arbitrary DL-safe rules (as expressible in SWRL or RIF) in their native syntax. We show that adding nominal schemas to OWL 2 does not increase the worst-case reasoning complexity, and we identify a novel tra...