Results 11 to 20 of about 117,983 (293)

Synthesis of a New α-Azidomethyl Styrene from Safrole via a Dearomative Rearrangement

open access: yesMolbank, 2023
There is a growing interest in developing more efficient synthetic alternatives for the synthesis of nitrogen-containing allylic compounds. This article presents a straightforward two-step protocol to produce 5-(3-azidoprop-1-en-2-yl)benzo[d][1,3]dioxole
Stephen R. Isbel, Alejandro Bugarin
doaj   +1 more source

2-Alkylation of 3-Alkyindoles With Unactivated Alkenes

open access: yesFrontiers in Chemistry, 2022
An acid-catalyzed 2-alkylation of indole molecules is developed. Only catalytic amount of the commercially available, inexpensive and traceless HI is used as the sole reaction promoter. 2,3-Disubstituted indole molecules bearing congested tertiary carbon
Xuling Pan, Qian Liu, Yingling Nong
doaj   +1 more source

Asymmetric Epoxidation of Olefins with Sodium Percarbonate Catalyzed by Bis-amino-bis-pyridine Manganese Complexes

open access: yesMolecules, 2022
Asymmetric epoxidation of a series of olefinic substrates with sodium percarbonate oxidant in the presence of homogeneous catalysts based on Mn complexes with bis-amino-bis-pyridine ligands is reported.
Varvara A. Drozd   +2 more
doaj   +1 more source

Chain Propagation Mechanism of Fischer–Tropsch Synthesis: Experimental Evidence by Aldehyde, Alcohol and Alkene Addition

open access: yesReactions, 2021
Fischer–Tropsch synthesis (FTS) produces hundreds of hydrocarbons and oxygenates by simple reactants (CO + H2) and the detailed chain propagation mechanism is still in dispute.
Liping Zhou   +4 more
doaj   +1 more source

Alkene Diversification through a Molecular Recasting Strategy Enabled by <i>N</i>-Heterocyclic Carbene and Photoredox Dual Catalysis. [PDF]

open access: yesResearch (Wash D C)
Alkenes are fundamental structural motifs in organic synthesis, valued for their prevalence in natural products and their broad reactivity profile. While traditional de novo synthesis offers access to diverse alkene frameworks, strategies enabling the ...
Li QZ   +6 more
europepmc   +2 more sources

Synthetic Studies on Erythromycin Derivatives: Reactivity of the C12-21 Alkene

open access: yesMolecules, 2006
The reactivity of the C12-21 alkene of some erythromycin A derivatives was studied. This double bond was easily oxidized to the corresponding epoxide with excellent stereoselectivity. A single crystal X-ray structure showed that the epoxide moiety was on
Wei-Min Chen
doaj   +1 more source

Impacts of Nutrients on Alkene Biodegradation Rates and Microbial Community Composition in Enriched Consortia from Natural Inocula

open access: yesMicrobiology Spectrum, 2023
There is a growing need for biological and chemical methods for upcycling plastic waste streams. Pyrolysis processes can accelerate plastic depolymerization by breaking polyethylene into smaller alkene components which may be more biodegradable than the ...
Emily Byrne   +3 more
doaj   +1 more source

The Nitrilimine–Alkene Cycloaddition Regioselectivity Rationalized by Density Functional Theory Reactivity Indices

open access: yesMolecules, 2017
Conventional frontier molecular orbital theory is not able to satisfactorily explain the regioselectivity outcome of the nitrilimine–alkene cycloaddition.
Giorgio Molteni, Alessandro Ponti
doaj   +1 more source

A mild and effective method for the conversion of alkenes into alcohols in subcritical water [PDF]

open access: yesJournal of the Serbian Chemical Society, 2007
Alkenes were oxidized to alcohols in subcritical water. A number of alkenes were oxidized directly to their alcohols in excellent yields. The syntheses were performed in 215 cm3 stainless steel high pressure reactor at 120 ºC in 150 cm3 water. The yields
RECEP OZEN, NERMİN S. KUS
doaj   +3 more sources

Synthetic Biology Approaches to Hydrocarbon Biosensors: A Review

open access: yesFrontiers in Bioengineering and Biotechnology, 2022
Monooxygenases are a class of enzymes that facilitate the bacterial degradation of alkanes and alkenes. The regulatory components associated with monooxygenases are nature’s own hydrocarbon sensors, and once functionally characterised, these components ...
Claudia F. Moratti   +3 more
doaj   +1 more source

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