Annulation reactions of heterocyclic chlorovinylaldehydes: synthesis of functionalized 6H-benzo[c]chromen-6-ones (biaryl lactones), 6H-benzo[c]chromenes and heteroannulated pyridines Abbasi, Muhammad Shakeel Ahmed , 1975- Text theses Text Hochschulschrift 2014 2014 eng electronic resourceremoteComputermedienOnline-Ressourcetext/htmlapplication/pdfOnline-Ressource Ill. A simple and convenient domino cycloaromatization approach towards the synthesis of novel benzo[c]chromen-6-ones and benzo[c]chromenes by treatment of heterocyclic chlorovinyl-aldehydes with active methylene compounds has been developed. In another strategy novel biaryl lactones were prepared by Sonogashira cross-coupling and base catalyzed reactions of 4-chloro-2-oxo-2H-chromene-3-carbaldehyde with terminal alkynes and 1, 3-dicarbonyl compounds.Finally some heterocyclic chlorovinyl-aldehydes were treated with electron rich heterocyclic amines to afford novel heteroannulated pyridines. Muhammad Shakeel Ahmed Abbasi Rostock, Univ., Mathematisch-Naturwiss. Fak., Diss., 2015 547.2 547.596 540 Organische Chemie http://rosdok.uni-rostock.de/resolve?urn=urn:nbn:de:gbv:28-diss2015-0086-0 http://rosdok.uni-rostock.de/resolve?urn=urn:nbn:de:gbv:28-diss2015-0086-0&pdf http://nbn-resolving.de/urn:nbn:de:gbv:28-diss2015-0086-0 Annulation reactions of heterocyclic chlorovinylaldehydes--(DE-627)826070485 urn:nbn:de:gbv:28-diss2015-0086-0 oclc: 935870908 ppn: (DE-627)826790283