Results 21 to 30 of about 262,165 (220)

Photo‐induced Desulfurative Processes for Carbon Radical Generation

ChemCatChem, Volume 15, Issue 20, October 20, 2023., 2023
Photo‐initiated desulfurization of sulfur‐containing derivatives such as, native thiols, thioethers, sulfonium salts and xanthates, allows the generation of carbon‐based radicals that can be coupled with various partners providing access to a wide range of functionalized molecules by C−C and C‐heteroatom bond formation.
Lilian Geniller, Marc Taillefer, Florian Jaroschik, Alexis Prieto   +3 more
wiley   +1 more source

A Route to Indoles via Modified Fischer Indole Intermediates from Sulfonanilides and Ketene Dithioacetal Monoxides [PDF]

, 2020
An S−N variant of the N−N‐based Fischer indole synthesis has been developed. Treatment of sulfonanilides and ketene dithioacetal monoxides with a powerful acid anhydride provides N‐sulfonyl‐2‐methylsulfanylindoles.
Baralle, Alexandre, Kinoshita, Jun, Nogi, Keisuke, Yanagi, Tomoyuki, Yorimitsu, Hideki, Yoshida, Akira   +5 more
core   +1 more source

Blue‐LED Synthesis of Pummerer's Ketones by Peroxidase‐Lignin‐Catalyzed Oxidative Coupling of Substituted Phenols

European Journal of Organic Chemistry, Volume 26, Issue 32, August 21, 2023., 2023
Horseradish peroxidase activated by hydroperoxide of 2‐MeTHF catalyzes the synthesis of Pummerer's Ketones under blue‐LED Photon irradiation in the presence of meso‐TPP. Lignin nanoparticles worked as an electroactive platform in improving the activity of the enzyme.
Davide Piccinino, Natalia Ceccotti Vlas, Sofia Gabellone, Eliana Capecchi, Raffaele Saladino   +4 more
wiley   +1 more source

Chirale Synthesebausteine aus Aminosäuren: Dihydrothiazol-Derivate (Δ4-Thiazoline) aus Cystein

CHIMIA, 1989
Reaction of cysteine with pivalaldehyde and protection at the nitrogen atom with benzyl chloroformate give the diastereomerically pure cyclic N,S-acetal 2 which is selectively oxidized to the sulfoxide 3.
Dieter Seebach, André Jeanguenat, Jürgen Schmidt, Thomas Maetzke   +3 more
doaj   +1 more source

A Blueprint for Transforming Indigos to Photoresponsive Molecular Tools

Chemistry – A European Journal, Volume 29, Issue 43, August 1, 2023., 2023
Indigo dye is one of the most iconic compounds connecting chemistry to our society. In addition to providing the characteristic blue color, indigos display fascinating photochemical properties. This Review first discusses the synthetic construction and derivatization of indigos. Then their photoswitching and photoinduced electron transfer behaviors are
Chung‐Yang (Dennis) Huang, Stefan Hecht   +1 more
wiley   +1 more source

Palladium-catalyzed amination of aryl sulfides with anilines. [PDF]

, 2014
A combination of a palladium-NHC catalyst and potassium hexamethyldisilazide enables the amination of aryl sulfides with anilines to afford a wide variety of diarylamines.
Murakami, Kei, Osuka, Atsuhiro, Sugahara, Tomohiro, Yorimitsu, Hideki   +3 more
core   +1 more source

Cross-border Intra-group Hybrid Finance and International Taxation [PDF]

, 2010
In intra-group finance hybrid instruments allow for tailor-made form of finance. Hence hybrid finance is often used for international tax planning in multinational groups. Due to a lack of international tax harmonization or tax coordination qualification
Eberhartinger, Eva, Göritzer, Andreas, Pummerer, Erich   +2 more
core   +1 more source

Organophotocatalytic Mechanisms: Simplicity or Naïvety? Diverting Reactive Pathways by Modifications of Catalyst Structure, Redox States and Substrate Preassemblies

ChemCatChem, Volume 15, Issue 11, June 9, 2023., 2023
Organophotocatalysis: Which pathway to go? This review exemplifies influences of organophotocatalyst structural and redox programming, to select for a particular excited‐state mechanism among a diversity of potential mechanisms. It showcases how such strategies are exploited for catalyst‐substrate preassemblies that overcome common reactivity issues ...
Mark John P. Mandigma, Jaspreet Kaur, Joshua P. Barham   +2 more
wiley   +1 more source

ChemInform Abstract: STEREOSELECTIVE PUMMERER REARRANGEMENT OF PHENYLSULFINYLCYCLOPROPANES WITH ACETIC ANHYDRIDE. II [PDF]

Chemischer Informationsdienst, 1977
AbstractDie Pummerer‐Reaktion der cis‐Phenylsulfinylcyclopropane (I) liefert Gemische der Acetate (II) und (III), während aus den trans‐Verbindungen (IV) stereoselektiv die Verbindungen (III) gebildet werden.
Toshiaki Masuda, Tatsuo Numata, Naomichi Furukawa, Shigeru Oae   +3 more
openaire   +3 more sources

Enantioselective Pummerer-type rearrangement by reaction of O-silylated ketene acetal with enantiopure α-substituted sulfoxides [PDF]

, 1997
Chiral non-racemic α-substituted sulfoxides have been allowed to react with O-silylated ketene acetals in the presence of a catalytic amount of ZnI2 in THF to give chiral non-racemic α-siloxy sulfides in >99% ee.
1000040293302, 12788, 13757, 13759, 13760, 8650, Bando, Masahiko, Fujita, Shigekazu, Fukui, Seiji, Kita, Yasuyuki, Shibata, Norio   +10 more
core   +1 more source