Results 101 to 110 of about 11,578 (241)

1,1‐and 1,2‐Diborylalkenes: Preparation and Synthetic Applications

open access: yesAdvanced Synthesis &Catalysis, Volume 368, Issue 12, 17 June 2026.
In this review, we highlight recent advances in the synthesis and reactivity of 1,1‐diborylalkenes and 1,2‐diborylalkenes, along with various transformations leading to C‐C, C‐heteroatom, and multicomponent products. By providing a comprehensive and practical resource, this review aims to assist researchers in exploring the synthetic utility of 1,1 and
Jayaram Vankudoth   +2 more
wiley   +1 more source

Synthesis of β‐Enamino Sulfoxides via Cine‐Substitution of 1‐Chlorovinyl p‐Tolyl Sulfoxides with Lithium Amides

open access: yesAdvanced Synthesis &Catalysis, Volume 368, Issue 12, 17 June 2026.
The cine‐substitution of 2‐aryl‐1‐chlorovinyl p‐tolyl sulfoxides with lithium amides yields β‐enamino sulfoxides with high efficiency. β‐Enamino sulfoxides are desulfinylated via the sulfoxide/magnesium exchange reaction with isopropylmagnesium chloride to yield enamines.
Tsutomu Kimura   +4 more
wiley   +1 more source

Halogenation of microcapsule walls

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  

Palladium catalyzed ortho-halogenation of 2-arylbenzothiazole and 2,3-diarylquinoxaline

open access: yes, 2015
A palladium catalysed ortho-halogenation strategy has been developed using benzothiazoles and quinoxalines as the directing substrates. This method provides mono-o-halogenated product at the other available ortho site of a mono-ortho substituted 2 ...
Khatun, Nilufa   +4 more
core   +1 more source

Revolutionary ZVI-Entrapped Sol–Gel Silica Matrices: Efficient Catalytic Reduction of High-Concentration Halo-Organic Compounds—Addressing Bromoacetic Acid Contamination in Industrial Wastewaters

open access: yesGels
The de-halogenation of highly concentrated halo-organic compounds using Zero Valent Iron entrapped in silica matrices as a catalyst was investigated. This study aimed to evaluate the effectiveness of the Zero Valent Iron-entrapped organically modified ...
Gifty Sara Rolly   +4 more
doaj   +1 more source

Redox‐Active Guanidines

open access: yesChemElectroChem, Volume 13, Issue 12, 17 June 2026.
Redox‐active guanidines, comprising guanidino‐functionalized aromatics (GFAs) and redox‐active urea azines (RAAs), are electron donors and strong Lewis and Brønsted bases that are used in several applications. They act as redox‐active ligands in bistable coordination compounds and as reagents in dehydrogenative coupling reactions and proton‐coupled ...
Hans‐Jörg Himmel
wiley   +1 more source

Halogenation through Deoxygenation of Alcohols and Aldehydes

open access: yes, 2018
An efficient reagent system, Ph3P/XCH2CH2X (X = Cl, Br, or I), was very effective for the deoxygenative halogenation (including fluorination) of alcohols (including tertiary alcohols) and aldehydes. The easily available 1,2-dihaloethanes were used as key
Ji-Chang Xiao (1457842)   +2 more
core   +1 more source

(E,Z)-1,1,1,4,4,4-Hexafluorobut-2-enes: hydrofluoroolefins halogenation/dehydrohalogenation cascade to reach new fluorinated allene

open access: yesBeilstein Journal of Organic Chemistry
A series of 2,3-dihalo-1,1,1,4,4,4-hexafluorobutanes and 2-halo-1,1,1,4,4,4-hexafluorobut-2-enes were prepared from commercially available hydrofluoroolefins 1,1,1,4,4,4-hexafluorobut-2-enes and their 1H, 19F and 13C chemical shifts measured.
Nataliia V. Kirij   +4 more
doaj   +1 more source

Expanding the Toolbox for Biocatalytic Halogenation by Identification and Characterization of Three Vanadium Chloroperoxidases

open access: yesChemBioChem, Volume 27, Issue 11, 15 June 2026.
Schematic illustration of the workflow from DNA sequence‐based research to expression in shaking flasks and subsequent purification via IMAC. The obtained enzymes broaden the toolbox of enzymes used for halogenation reactions with differing catalytic properties and tolerances to reaction‐related conditions.
Sonja Schönrock   +2 more
wiley   +1 more source

Photocatalytic Vanadium‐Mediated Amination of Benzene With Hydroxylamine

open access: yesChemistry – A European Journal, Volume 32, Issue 22, 9 June 2026.
Photochemical activation of N‐phenylphenothiazine (PPT) enables a selective direct benzene amination with hydroxylamine in the presence of various vanadium catalysts under mild reaction conditions. Spectroscopic and kinetic analyses identify a key vanadium(IV)‐hydroxylamine intermediate, elucidate the crucial roles of the acidic medium, the ...
Dana Králová   +6 more
wiley   +1 more source

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