Zobrazeno 1 - 10
of 1 262
pro vyhledávání: '"Tributyltin hydride"'
Publikováno v:
Chemical Science
An electrochemical ‘redox-relay’ system has been developed which allows the generation of C-centered radicals. Intermolecular ‘tin-like’ radical reactions can subsequently be conducted under the most benign of conditions. The yields and effic
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Publikováno v:
Tetrahedron. 74:5458-5474
A range of novel β-nitroacetamides with an alkenyl- or alkynyl tether were synthesized using the deprotonative or conjugate addition nitro-Mannich reaction. They were subjected to radical denitration-cyclisation with a 10 equivalent excess of tribut
Autor:
Nadeem S. Sheikh, Daniele Leonori, Timothée Constantin, Fabio Juliá, Margherita Zanini, Alessio Regni
Publikováno v:
Science
Constantin, T, Zanini, M, Regni, A, Sheikh, N S, Julia Hernandez, F & Leonori, D 2020, ' Aminoalkyl radicals as halogen-atom transfer agents for activation of alkyl and aryl halides ', Science, vol. 367, no. 6481, pp. 1021-1026 . https://doi.org/10.1126/science.aba2419
Constantin, T, Zanini, M, Regni, A, Sheikh, N S, Julia Hernandez, F & Leonori, D 2020, ' Aminoalkyl radicals as halogen-atom transfer agents for activation of alkyl and aryl halides ', Science, vol. 367, no. 6481, pp. 1021-1026 . https://doi.org/10.1126/science.aba2419
Amines as a gateway to alkyl radicals In recent years, photoredox catalysis driven by blue light has often been used to oxidize carbon centers adjacent to nitrogen. Constantin et al. now show that these aminoalkyl radicals can, in turn, conveniently
Publikováno v:
The Journal of Organic Chemistry. 83:10037-10050
Nonideal kinetic chain analysis was used to examine the kinetic limitations of free-radical synthesis. Homolytic aromatic substitution (HAS: ArH + R• → ArR + H•) occurs in a chain-terminating side reaction to the tributyltin hydride ( SnH) redu
Publikováno v:
Journal of Labelled Compounds and Radiopharmaceuticals. 61:447-454
In this article, we describe the carbon-11 (11 C, t1/2 = 20.4 minutes) labeling of benzyl alcohols, benzaldehydes, and ketones using an efficient 2-step synthesis in which 11 C-carbon monoxide is used in an initial palladium-mediated reaction to prod
Autor:
Anastasiya V. Agafonova, Ilia A. Smetanin, Mikhail S. Novikov, Nikolai V. Rostovskii, Alexander F. Khlebnikov
Publikováno v:
Organic Chemistry Frontiers. 5:3396-3401
An unprecedented application of tributyltin hydride (TBTH) as a reagent for the reductive ionic 1,5-cyclization of 3-azamuconoates (3-azahexa-2,4-dienedioates) is described. A novel 1,5-exo-trig-cyclization of 5-chloro-3-azamuconoates was used as a b
Autor:
Dylan Dominguez, Noelle K. DeRose, Ashley D. Padilla, Scott D. Twining, Chidozie O. Alozie, Stephanie Casas, Ashley L. Lehr, Michael De Castro, Mohammed R. Elshaer, Caleigh S. Garton, Maria L. Turbi-Henderson, Azad L Gucwa
Publikováno v:
Molecules
Molecules, Vol 26, Iss 3742, p 3742 (2021)
Molecules, Vol 26, Iss 3742, p 3742 (2021)
A series of 2-deoxy-2-iodo-α-d-mannopyranosylbenzotriazoles was synthesized using the benzyl, 4,6-benzylidene and acetyl protected D-glucal in the presence of N-iodosuccinimide (NIS). Subsequent removal of the iodine at the C-2 position using tribut
Autor:
Thomas J. Gregson, Eric J. Thomas
Publikováno v:
Tetrahedron. 73:3316-3328
Vinylic iodides were identified as useful intermediates for the synthesis of the C17-C27 fragment of the bryostatins with control of the geometry of the exocyclic methoxycarbonylmethylene group. Following literature precedent, the Piers ( E )-stereos
Autor:
Shun-ichi Hirose, Sari Hamamoto, Nobuhiro Kihara, Yoshinori Uzawa, Akane Fujioka, Makoto Sato, Ryo Iwasaki, Yuji Mitsuhashi, Natsumi Shirai, Erika Goudo
Publikováno v:
Tetrahedron Letters. 57:2563-2566
Anilines were protected as 2-(phenylseleno)ethanesulfonanilide (SeES anilide) via sulfonylation by 2-chlorosulfonyl chloride followed by the conjugate addition of benzeneselenol. The SeES anilide was deprotected by radical reduction using tributyltin