71897-63-7Relevant articles and documents
α-Heteroarylation of Thioethers via Photoredox and Weak Br?nsted Base Catalysis
Alfonzo, Edwin,Hande, Sudhir M.
supporting information, p. 6115 - 6120 (2021/08/16)
We report the C-H activation of thioethers to α-thio alkyl radicals and their addition to N-methoxyheteroarenium salts for the redox-neutral synthesis of α-heteroaromatic thioethers. Studies are consistent with a two-step activation mechanism, where oxidation of thioethers to sulfide radical cations by a photoredox catalyst is followed by α-C-H deprotonation by a weak Br?nsted base catalyst to afford α-thio alkyl radicals. Further, N-methoxyheteroarenium salts play additional roles as a source of methoxyl radical that contributes to α-thio alkyl radical generation and a sacrificial oxidant that regenerates the photoredox catalytic cycle.
Regioselective Synthesis of 1-Sulfanyl- and 1-Selanylindolizines
Penteado, Filipe,Gomes, Caroline S.,Perin, Gelson,Garcia, Cleisson S.,Bortolatto, Cristiani F.,Brüning, César A.,Lenard?o, Eder J.
, p. 7189 - 7198 (2019/06/14)
We describe herein a new approach to prepare unprecedented bioactive indolizine motifs decorated with organosulfur and organoselenium groups. A total of 12 1-sulfanylindolizines and 2 1-selanylindolizines were prepared in excellent yields by an intramolecular annulation of easily prepared chalcogen-containing pyridinium salts. The reaction is fast (1 h at 70 °C or 5 min under sonication) and transition-metal-free, using glycerol as a green solvent.
SUBSTITUTED METHYL AMINES, SEROTONIN 5-HT6 RECEPTOR ANTAGONISTS, METHODS FOR PRODUCTION AND USE THEREOF
-
Paragraph 0176, (2013/10/22)
The present invention relates to novel substituted methyl-amines, serotonin 5-HT6 receptor antagonists, to active components, pharmaceutical compositions, method for prophylaxis and treatment of CNS diseases and “molecular tools”, in which novel substituted methyl-amines represent compounds of the general formula 1 and their crystalline forms and pharmaceutically acceptable salts, wherein: W represents benzene, naphthalene, indolizine, quinoline or oxazole cycle; R1=H, F, Cl; R2 represents hydrogen, fluoro, methyl, phenyl, thienyl, furan-2-yl, pyridyl, piperazin-1-yl or 4-methylpiperazin-1-yl; R3 represents cyclopropyl or optionally substituted methyl; with the exception of the compounds in which W simultaneously represents oxazole cycle and R2=phenyl or pyridyl.