Results 1 to 10 of about 1,369,819 (304)
Ring-Opening Fluorination of Isoxazoles [PDF]
Organic Letters, 2022 A ring-opening fluorination of isoxazoles has been developed. By treating isoxazoles with an electrophilic fluorinating agent (Selectfluor®), fluorination followed by deprotonation leads to tertiary fluorinated carbonyl compounds. The present method features mild reaction conditions, good functional group tolerance, and simple experimental procedure ...
Masaaki Komatsuda +4 more
core +5 more sources
Ring Opening of Epoxides by Pendant Silanols [PDF]
Organic Letters, 2021 We present a new ring-opening reaction of epoxides by pendant silanols, catalyzed by either Ph3C+BF4– or BINOL-phosphoric acid. In all cases examined, the reaction is perfectly regioselective and diastereoselective. Silanol epoxides derived from trans-allylic alcohols, cis-allylic alcohols, trans-homoallylic alcohols, and cis-homoallylic alcohols were ...
SHYAM SATHYAMOORTHI +2 more
openaire +5 more sources
Unexplored Nucleophilic Ring Opening of Aziridines
Molecules, 2010 The reactivity of dianions of carboxylic acids towards aziridines has been studied. Although, a similar reactivity to that of enolates from ketones, esters or amides has been observed, the method directly yields g-aminoacids in one step.
Ana María Costero +3 more
doaj +3 more sources
Oxidative Arene Ring-Opening of Benzylic Alcohols [PDF]
JACS AuMing-Hui Zhu +6 more
doaj +2 more sources
Alkylative Aziridine Ring-Opening Reactions
Molecules, 2021 In this study, the highly strained three-membered aziridine ring was successfully activated as the aziridinium ion by alkylation of the ring nitrogen with a methyl, ethyl or allyl group, which was followed by ring opening with external nucleophiles such ...
Jieun Choi, Taehwan Yu, Hyun-Joon Ha
doaj +1 more source
Chemistry Teacher International, 2021 Ring-opening polymerization is defined by IUPAC (Penczek, S., Moad, G. (2008). Glossary of the terms related to kinetics, thermodynamics, and mechanisms of polymerization.
Penczek Stanislaw +2 more
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Recent advances using cyclopropanols and cyclobutanols in ring-opening asymmetric synthesis
Green Synthesis and Catalysis, 2022 Due to high ring strain energies, cyclopropanols and cyclobutanols have a strong tendency of breaking the endocyclic C–C bonds to participate in versatile organic transformations.
Hong Yan, Gregory S. Smith, Fen-Er Chen
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Modeling of Living Cationic Ring-Opening Polymerization of Cyclic Ethers: Active Chain End versus Activated Monomer Mechanism [PDF]
Iranian Journal of Chemistry & Chemical Engineering, 2020 Living cationic ring-opening polymerization of cyclic ethers in the presence of diol was modeled using the method of moments. A widespread kinetic model was developed based on previous experimental studies.
Mehdi Mahmoudian +5 more
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Alkylating ability of carbohydrate oxetanes: Practical synthesis of bolaform skeleton derivative [PDF]
Journal of the Serbian Chemical Society, 2015 Alkylating ability of oxetane ring in carbohydrate structure was investigated and flexible method for bolaform amphiplile skeleton construction with xylose as polar heads is proposed.
Hadžić Pavle A. +2 more
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Special Issue “Ring-Opening Polymerization”
Molecules, 2016 n ...
Takeshi Endo, Atsushi Sudo
doaj +1 more source