Investigation of Tacticity and Living Characteristics of Photoredox-Mediated Metal-Free Ring-Opening Metathesis Polymerization.
Sign Up to like & getrecommendations! Published in 2017 at "Macromolecular rapid communications"
DOI: 10.1002/marc.201600766
Abstract: This study investigated the microstructures of polymers produced via photoredox-mediated metal-free ring-opening metathesis polymerization. Polynorbornene, poly(exo-dihydrodicyclopentadiene), and poly(endo-dicyclopentadiene) were found to have cis olefin contents of 23%, 24%, and 28%, respectively. Additionally, the cis/trans ratio… read more here.
Keywords: free ring; ring opening; polymerization; mediated metal ... See more keywords
Synthesis of Benzo-Fused Cyclic Ketones via Metal-Free Ring Expansion of Cyclopropanols Enabled by Proton-Coupled Electron Transfer.
Sign Up to like & getrecommendations! Published in 2021 at "Organic letters"
DOI: 10.1021/acs.orglett.1c01436
Abstract: The metal-free ring expansion of cyclopropanols containing a pendant styrene moiety was successfully achieved using a proton-coupled electron transfer enabled by an organic photoredox catalyst. Through this, variants of 1-tetralone and 1-benzosuberone bearing a substituent… read more here.
Keywords: free ring; ring expansion; proton coupled; ring ... See more keywords
Solvent-Free Ring Cleavage Hydrazinolysis of Certain Biginelli Pyrimidines
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Chemistry"
DOI: 10.1155/2018/6354742
Abstract: Certain Biginelli pyrimidines with ester substitution in C5 were subjected to unexpected ring opening upon solvent-free reaction with hydrazine hydrate to give three products: pyrazole, arylidenehydrazines, and urea/thiourea, respectively. The nonisolable carbohydrazide intermediates are formed… read more here.
Keywords: free ring; biginelli pyrimidines; certain biginelli; ring cleavage ... See more keywords