Intramolecular Addition of a Dimethylamino C(sp3)–H Bond across C–C Triple Bonds Using IrCl(DTBM-SEGPHOS)(ethylene) Catalyst: Synthesis of Indoles from 2-Alkynyl-N-methylanilines

Autor: Kaito Yagi, Toshimichi Ohmura, Takeru Torigoe, Michinori Suginome

Publikováno v: Synthesis. 53:3057-3064

Intramolecular addition of a C(sp3)–H bond of the dimethylamino group across the C–C triple bond in 2-alkynyl-N,N-dimethylanilines is effectively catalyzed by a new iridium complex, IrCl(DTBM-SEGPHOS)(C2H4), in mesitylene at 150 °C. The intramol

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::434c885d67da5965419785a44e5f55a9
https://doi.org/10.1055/a-1511-1025

Synthesis, Characterization, and Application of Segphos Derivative Having Diferrocenylphosphino-Donor Moieties

Autor: Naoki Seki, Yasuhiro Ohki, Hao Hu, Hiroki Ichiryu, Masamichi Ogasawara, Kiyohiko Nakajima

Publikováno v: Organometallics. 39:788-792

An axially chiral bisphosphine, Fc-Segphos (1), which possesses diferrocenylphosphino-donor moieties, was prepared as a racemate, and its optical resolution was achieved by the use of chiral HPLC. Ligand 1 coordinated to a palladium(II) cation in a b

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b3634bf5ef0c75ae454a3e818df29108
https://doi.org/10.1021/acs.organomet.9b00865

Direct Observation of Diastereomeric α-C-Bound Enolates during Enantioselective α-Arylations: Synthesis, Characterization, and Reactivity of Arylpalladium Fluorooxindole Complexes

Autor: Eric D. Kalkman, John F. Hartwig

Publikováno v: Journal of the American Chemical Society. 143(30)

The Pd-catalyzed asymmetric α-arylation of carbonyl compounds is a valuable strategy to form benzylic stereocenters. However, the origin of the stereoselectivity of these reactions is poorly understood, and little is known about the reactivity of th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c969741e4b151d8f87347cb596692478
https://pubmed.ncbi.nlm.nih.gov/34308646

The application of the chiral ligand DTBM-SegPHOS in asymmetric hydrogenation

Autor: Nicholas A. Butt, Jianzhong Chen, Wanbin Zhang

Publikováno v: Research on Chemical Intermediates. 45:5959-5974

This paper summarizes the application of the chiral ligand DTBM-SegPHOS in asymmetric catalytic hydrogenation reactions. DTBM-SegPHOS exhibits pronounced catalytic activity and enantioselectivity due to its high electron density and steric bulk. Inde

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f465ae6fb80062999351c6f3ec3c99c4
https://doi.org/10.1007/s11164-019-04013-w

Rhodium-Catalyzed Enantioselective Synthesis of Highly Fluorescent and CPL-Active Dispiroindeno[2,1-c]fluorenes

Autor: Květa Kalíková, Ludovic Favereau, Róbert Gyepes, Lucie Bednárová, David Nečas, Jana Hodačová, Ivana Císařová, Reinhard P. Kaiser, Timothée Cadart, Jeanne Crassous, Martin Kotora

Publikováno v: Chemistry-A European Journal
Chemistry-A European Journal, Wiley-VCH Verlag, 2021, ⟨10.1002/chem.202100759⟩
Chemistry-A European Journal, 2021, 27 (44), pp.11279-11284. ⟨10.1002/chem.202100759⟩

International audience; The enantioselective synthesis of chiral [7]-helical dispirodihydro[2,1-c]indenofluorenes (DSF-IFs) was achieved for the first time in good yields with high er values (er up to 99 : 1). The crucial step of the whole reaction s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1955ba3bcf977ec83488e835112c2ca2
https://hal.archives-ouvertes.fr/hal-03245247/document