7596-80-7Relevant academic research and scientific papers
High-Spin Cobalt(II) Complex with Record-Breaking Anisotropy of the Magnetic Susceptibility According to Paramagnetic NMR Spectroscopy Data
Pankratova, Ya. A.,Nelyubina, Yu. V.,Novikov,Pavlov
, p. 10 - 16 (2021/02/21)
Abstract: The tetrahedral cobalt(II) complex [CoL2](HNEt3)2 (I), where L is 1,2-bis(methanesulfonamido)benzene, exhibiting the properties of a single-molecule magnet is synthesized and characterized. The electronic structu
A Versatile Synthesis of Vinyl-Substituted Heterocycles via Regio- And Enantioselective Pd-Catalyzed Tandem Allylic Substitution
Qian, Chao,Tang, Wenjun,Tang, Wenjun
supporting information, p. 4483 - 4488 (2020/06/05)
We herein report a versatile, regio- and enantioselective palladium-catalyzed tandem allylic substitution powered by a chiral bisphosphorus ligand WingPhos with the palladium loading as low as 0.1 mol %, forming a series of chiral vinyl-substituted heterocycles, including tetrahydroquinoxalines, piperazines, dihydro-2H-benzo[b][1,4]-oxazines, and morpholines, in exellent ee's and yields. The protocol features readily available starting materials, mild reaction conditions, and a broad substrate scope. Mechanistic investigation supports a tandem allylic substitution process.
Pd(II)-Catalyzed Aerobic Intermolecular 1,2-Diamination of Conjugated Dienes: A Regio- and Chemoselective [4 + 2] Annulation for the Synthesis of Tetrahydroquinoxalines
Wu, Zhengxing,Wen, Ke,Zhang, Jingang,Zhang, Wanbin
supporting information, p. 2813 - 2816 (2017/06/07)
A Pd(II)-catalyzed aerobic intermolecular 1,2-diamination of conjugated dienes was developed for the regio- and chemoselective preparation of a variety of functionalized tetrahydroquinoxalines, using simple sulfonyl protected o-phenylendiamines as a nitrogen source. This methodology provides a direct and efficient synthesis of tetrahydroquinoxalines. O2 was used as the stoichiometric oxidant, and reaction conditions were applied to a series of o-phenylendiamines and conjugated dienes. 35 examples are described, and good yields and selectivities are obtained for the majority of the products.
Synthesis of spirocyclic aminosilanes with electron withdrawing substituents at nitrogen
Wollenweber, Markus,Keese, Reinhart,Stoeckli-Evans, Helen
, p. 145 - 148 (2007/10/03)
The first synthesis of spirocyclic tetrasulfonamidosilanes is described. According to the X-Ray structure analysis of the most stable tetratosylamidosilane obtained the Silicon is bonded to four Nitrogen atoms in a spirocycle and surrounded by four Oxygen
