Results 71 to 80 of about 12,869 (241)

Synthesis and biological evaluation of novel N-α-haloacylated homoserine lactones as quorum sensing modulators

open access: yesBeilstein Journal of Organic Chemistry, 2014
Novel N-α-haloacylated homoserine lactones, in which a halogen atom was introduced at the α-position of the carbonyl function of the N-acyl chain, have been studied as quorum sensing (QS) modulators and compared with a library of natural N-acylated ...
Michail Syrpas   +4 more
doaj   +1 more source

Green' and sustainable halogenation processes

open access: yes, 2016
Halogen atoms have proven both to be some of the most useful functionality available to medicinal chemists, both as handles for further derivatisation and diversification and also due to the beneficial properties they, particularly fluorine, can impart ...
Graham Pattison, Pattison, Graham
core   +1 more source

Iodine(III)-mediated halogenations of acyclic monoterpenoids

open access: yesBeilstein Journal of Organic Chemistry, 2018
Five different halofunctionalizations of acyclic monoterpenoids were performed using a combination of a hypervalent iodine(III) reagent and a halide salt.
Laure Peilleron   +4 more
doaj   +1 more source

Halogenation of microcapsule walls [PDF]

open access: yes, 1972
Procedure for halogenation of confining walls of both gelatin and gelatin-phenolic resin capsules is similar to that used for microencapsulation. Ten percent halogen content renders capsule wall nonburning; any higher content enhances flame-retardant ...
Schaab, C. K.   +2 more
core  

Halogenation. Part IX. Bromination of Pseudocumene.

open access: yes, 1934
Halogenation. Part IX.
DHIRENDRA NATH SEN-GUPTA   +1 more
core   +1 more source

Amine Directed Palladium Catalyzed C‐H Halogenation of Phenylalanine Derivatives

open access: yes, 2021
International audienceAn efficient primary amine-directed palladium catalyzed C-H halogenation (X = I, Br, Cl) of phenylalanine derivatives is reported on a range of quaternary amino acid (AA) derivatives thanks to suited conditions employing ...
Coufourier, Sébastien   +7 more
core   +1 more source

Producing aryl halides from lignin

open access: yesNature Communications
Lignin represents the most abundant biomass resource, which contains aromatic units. Lignin refinery is a promising, sustainable alternative for the production of aromatic chemicals.
Yongqian Liu   +9 more
doaj   +1 more source

Biocatalytic N-Halogenation Enabled by Vanadium-Dependent Haloperoxidases [PDF]

open access: yes
Nitrogen-containing compounds are valuable synthetic intermediates and targets in nearly every chemical industry. While methods for nitrogen-carbon and nitrogen-heteroatom bond formation have primarily relied on nucleophilic nitrogen atom reactivity ...
Manik, Sharma   +4 more
core   +2 more sources

Aerobic oxidative bromination and iodination enabled by alloxan and ascorbic acid to mimic flavin-dependent halogenases

open access: yesNature Communications
The fundamentally significant halogenation processes in organic synthesis heavily depend on the use of hazardous and toxic elemental halogens directly or indirectly, inevitably increasing environmental burden and leading to various production problems ...
Shiqi Zhang   +6 more
doaj   +1 more source

Nitrooxylation in Organic Synthesis: From Classical Nitrate Ester Formation to Modern Catalytic Strategies

open access: yesChemistry – A European Journal, EarlyView.
Nitrooxylation—the installation of nitrate esters (–ONO2) has evolved from classical mixed‐acid protocols to catalytic and mechano‐, flow‐, photo‐, and electrochemical strategies. This review delineates ionic and radical manifolds for C–ONO2 bond formation, emphasizing mechanistic control, selected substrate scope, and selectivity.
Jayanta Dey, Dmitry Katayev
wiley   +1 more source

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