- A practical synthesis and X-ray crystal structure of tribenzo[ a, d, j ]corannulene
-
Tribenzo[a,d,j]corannulene (5) has been synthesized in four linear steps from commercially available starting materials on a half-gram scale in 18% overall yield. An X-ray crystal structure of this triply benzannulated geodesic polyarene confirms the prediction that successive benzannulation of corannulene has a gradual flattening effect on the bowl-shaped core.
- Smith, Natalie J.,Scott, Lawrence T.
-
-
Read Online
- Catalytic Asymmetric (3 + 3) Cycloaddition of Oxyallyl Zwitterions with α-Diazomethylphosphonates
-
The unique structure of oxyallyls represents a significant challenge for their catalytic asymmetric applications. Herein, an unprecedented chiral imidodiphosphoric acid-catalytic enantioselective (3 + 3) cycloaddition between oxyallyl zwitterions generate
- Liu, Yan,Peng, Xian,Peng, Yungui,She, Rui,Zhou, Xin
-
supporting information
p. 7295 - 7300
(2021/10/01)
-
- Palladium-Catalyzed [5 + 2] Heteroannulation of Phenethylamides with 1,3-Dienes to Dopaminergic 3-Benzazepines
-
Phenethyltriflamides react with 1,3-dienes upon treatment with a catalytic amount of Pd(OAc)2 and Cu(OAc)2/O2 as oxidant to afford chemo-, regio- A nd diastereoselectively 2,3,4,5-tetrahydro-1H-benzo[d]azepines (3-benzazepine derivatives) in good to excellent yields. A DFT study of the [5 + 2] heteroannulation suggests a mechanistic pathway starting with formation of the six-membered palladacycle cis-PdX2L2 via a CMD process followed by ??2 coordination and insertion of the 1,3-diene unit in a diastereoselective manner.
- Saá, Carlos,Varela, Jesús A.,Velasco-Rubio, álvaro
-
supporting information
p. 3591 - 3595
(2020/05/01)
-
- A bowl-shaped molecule for organic field-effect transistors: Crystal engineering and charge transport switching by oxygen doping
-
A corannulene-based derivative was facilely developed with a bowl-shaped structure. Highly ordered cofacial convex-concave stacking was realized through tuning the molecular dipoles, which is favorable for charge transport. Organic field-effect transistors were fabricated, providing opportunities for a broad class of corannulene derivatives and buckybowl aromatics for application in future organic electronic devices. The Royal Society of Chemistry 2014.
- Shi, Ke,Lei, Ting,Wang, Xiao-Ye,Wang, Jie-Yu,Pei, Jian
-
p. 1041 - 1045
(2014/03/21)
-
- Nickel catalyzed electrosynthesis of ketones from organic halides and metal carbonyls
-
Ketones can be easily obtained by electroreduction in an undivided cell of an organic halide-metal carbonyl mixture using a Ni-bpy catalytic system in DMF (bpy = 2,2'-bipyridine). The process is especially well convenient for primary benzyl and alkyl halides.
- Dolhem,Ocafrain,Nedelec,Troupel
-
p. 17089 - 17096
(2007/10/03)
-
- New Electrochemical Synthesis of Ketones from Organic Halides and Carbon Monoxide
-
The dissolution of a stainless steel anode provides catalytic nickel species which enable the efficient synthesis of ketones by electrolysis of organic halides in DMF in the presence of bipyridine and carbon monoxide.
- Ocafrain, Maitena,Devaud, Marguerite,Troupel, Michel,Perichon, Jacques
-
p. 2331 - 2332
(2007/10/02)
-
- Self-Termination and Electronic Spectra of Substituted Benzyl Radicals in Solution
-
Several substituted benzyl radicals have been generated in liquid cyclohexane by the photolysis of symmetrically substituted dibenzyl ketones.The rate constants for self-termination to substituted bibenzyls, and absorption spectra of the transient radicals, have been measured by optical modulation spectroscopy.The termination rates are generally well described by the von Smoluchowski equation with a spin factor of 1/4.Deviations are discussed in terms of steric retardation and the unreliability of the estimated reaction diameters of radicals with bulky substituent groups.Absorption spectra of the three monomethyl-, the three monochloro-, two dichloro-, and the three monomethoxybenzyl radicals demonstrate the influence of the substituents on the energy levels of the benzyl system.
- Claridge, Rodney F. C.,Fischer, Hanns
-
p. 1960 - 1967
(2007/10/02)
-