Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 8 of 8 for “"photocyclization"”.
-
The Syntheses and Photocyclization of Di-9-Anthrylmethanes
Made available in DSpace on 2014-12-10T23:02:11Z (GMT). No. of bitstreams: 1 7511595.pdf: 8228453 bytes, checksum: d97ad591e7d2080eaeccc43e04221703 (MD5) Previous issue date: 1974
-
The asymmetric synthesis of hexahelicene : the photocyclization of 2-styrylbenzo[c]phenanthrene in cholesteric liquid crystals and chiral media
Contains fulltext : MMUBN000001_065981790.pdf (Publisher’s version ) (Open Access)
-
LIGHT AND ELECTRICITY: POWERFUL TOOLS FOR NEW SUSTAINABLE STEREOSELECTIVE SYNTHESIS
… stereoselective methods for the metal-free photocyclization in order to synthetize trans-cyclopentane rings and functionalized bicyclo[3.2.0]heptane. Chapter 3.2 shows all the results obtained for the synthetic routes designed. First, we explored the enantioselective version of the …
-
Synthesis of a Family of Polyether-Substituted Phenacenes
… the synthesis is the ultraviolet light induced photocyclization, which allows for elongation of the phenacene chain. Unfortunately, the incorporation of the ether side chain had the unwanted effect of altering some of the key synthetic steps initially used to elongate the phenacene chains. …
-
ΕΝΔΟΜΟΡΙΑΚΗ ΦΩΤΟΚΥΚΛΟΠΟΙΗΣΗ ΤΗΣ ΚΑΡΒΟΝΗΣ ΠΡΟΣ ΚΑΡΒΟΝΟΚΑΜΦΟΡΑ
… OF DIFFERENT EXCITED STATES IS SUGGESTED FOR THE PHOTOCYCLIZATION OF CARVONE IN NON POLAR (A TRIPLET STATE) AND IN HYDROXYLIC SOLVENTS (N,N* SINGLET STATE) ON THE BASIS OF THE RESULTS AND THE EFFECT OF WATER ON THE ABSORPTION SPECTRUM OF CARVONE. THE INTRAMOLECULAR PHOTOCYCLOADDITION OF CARVONE TO …
-
Estudio del comportamiento fotoquímico y electroquímico de yodoalquenos
… synthesis and the reactivity in intramolecular photocyclization of many vinyl halides are described, obtaining several polycarbocycles and polyheterocycles. The photoreactivity mechanism of the vinyl iodides is studied by experimental methods such as quenching experiments, quantum yield …
-
Addressing the ongoing threat of antimicrobial resistance: synthetic investigations of novel amicetin and B-lactam antibiotics
… synthesis of novel 2-azetidinones via a radical photocyclization of acrylamides enabled by triplet energy transfer visible-light photocatalysis, a methodology which was also previously developed within our research group, and investigation into their antimicrobial activity. Although the …
-
Complejos metal-carbeno de Fischer nitrogenados: Mecanismos fotoquímicos y propiedades fotofísicas
Esta memoria se centra en el comportamiento de complejos iminocarbeno de Fischer frente a la luz. Se plantearon como objetivos los estudios de: la estereoselectividad en reacciones con alquenos para formar 1-pirrolinas, la influencia de los sustituyentes en la fotorreactividad y las propiedades …