Results 221 to 230 of about 633,575 (297)

Synthesis and Properties of Thiophene-Fused Thiopyrylium Salts

Journal of Organic Chemistry, 2020
A new family of thiophene-fused thiopyrylium salts has been synthesized via a Lewis-acid-induced Rieche formylation, followed by an intramolecular Friedel-Crafts cyclization of a series of diarylthioethers.
Yoshiyuki Mizuhata, Kentaro Okuma, Noriyoshi Nagahora   +2 more
exaly   +2 more sources

Sodium Salts (NaI/NaBr/NaCl) for the Halogenation of Imidazo-Fused Heterocycles

Journal of Organic Chemistry, 2019
We report herein an effective method for the halogenation of imidazo-fused heterocycles using readily available sodium salts (NaCl/NaBr/NaI) as halogen source and K2S2O8 (or) oxone as promoter.
Adimurthy Subbarayappa, Ramavatar Meena, Chitrakar Ravi   +2 more
exaly   +2 more sources

Corrosion in fused salts

British Corrosion Journal, 1966
AbstractA review of corrosion in fused salts is presented During the last 20 years interest in high-temperature liquids has expanded rapidly following their use as electrolytes for the production of uranium in the Manhattan project. As a consequence the structure and properties of fused salts have been much investigated.1–;3 Fused salts have many ...
D. Inman, N. S. Wrench
openaire   +2 more sources

Synthesis of 1,2-Fused/Disubstituted Benzimidazoles and Benzimidazolium Salts by I2-Mediated sp3 C-H Amination.

Organic Letters, 2022
An intramolecular sp3 C-H amination reaction of aniline derivatives has been established. This reaction employs molecular iodine (I2) under transition-metal-free conditions and produces 1,2-fused or 1,2-disubstituted benzimidazoles.
Xiaofei Yi, Zongxiang Zhao, Manman Wang, Wenquan Yu, Junbiao Chang   +4 more
semanticscholar   +1 more source

Stereoselective synthesis of fused-, spiro- and bridged heterocycles via cyclization of isoquinolinium salts: a recent update.

Organic and biomolecular chemistry, 2022
Isoquinoline and its derivatives are ubiquitous in natural alkaloids, synthetic materials and pharmaceuticals with a broad spectrum of biological activities. In particular, isoquinolinium salts are important in organic synthesis because they can serve as
Suven Das
semanticscholar   +1 more source

Photoinduced Reaction of Triarylphosphines with Alkenes Forming Fused Tricyclic Phosphonium Salts.

Organic Letters, 2021
Herein reported is a photoinduced reaction of triarylphosphines with alkenes in the presence of carbonic acid. A drastic structural change occurs to produce fused tricyclic phosphonium salts having a phosphatricyclo[4.3.0.02.9]nonene core structure.
Yusuke Masuda, M. Uno, Masahiro Murakami
semanticscholar   +1 more source

Fused Salts and Their Use as Reaction Media

Angewandte Chemie International Edition in English, 1965
W. Sundermeyer
exaly   +2 more sources

Chromatography and Spectrophotometry of Fused Salts

Nature, 1956
Dieter M Gruen, Gruen Dieter M
exaly   +2 more sources

Synthesis, Photochromic Properties, and Crystal Structures of Salts Containing a Pyridinium-Fused Spiropyran: Positive and Negative Photochromism in the Solution and Solid State.

Journal of Physical Chemistry B, 2020
Salts containing the merocyanine form of a pyridinium-fused spiropyran ([6´-MC]X; X = I and PF6) were prepared, and their crystal structures were determined.
Yusuke Funasako, Haruka Miyazaki, Takuro Sasaki, Kentaro Goshima, M. Inokuchi   +4 more
semanticscholar   +1 more source

Divergent Domino Reactions of Prop-2-ynylsulfonium Salts: Access to Sulfur-Containing Benzo-Fused Dioxabicyclo[3.3.1]nonanes and Dihydrofuro[2,3-c]chromenes.

Organic Letters, 2020
Solvent-controlled divergent domino annulation reactions between 2-hydroxy-2-methylchromene derivatives and prop-2-ynylsulfonium salts have been developed.
Yiming Zhou, Yu Chen, You Huang
semanticscholar   +1 more source