Zobrazeno 1 - 10
of 165
pro vyhledávání: '"L. Wartski"'
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 217:342-346
The main drawback of ECR ion sources for industrial applications is the high vulnerability of the vacuum dielectric window, when located in the line of sight of the plasma. We present the study of a simple microwave component consisting in a metallic
Publikováno v:
Review of Scientific Instruments. 72:3816-3825
The work presented in this article concerns the conception and the study of a multiantenna electron cyclotron resonance (ECR) ion source at 2.45 GHz dedicated to the surface treatment of large area materials. In this original device, a microwave plas
Autor:
Linda Le Coz-Bardol, Jean-Christophe Garde, Monique Lance, Renée Paugam, L. Wartski, Martine Nierlich, Emmanuelle Valenciennes
Publikováno v:
Tetrahedron: Asymmetry. 11:2509-2523
The asymmetric synthesis of N -phenylethyl-2-phenyldecahydroquinolin-4-ones was performed via a Lewis acid catalyzed imino-Diels–Alder reaction between the enantiopure ( R )- N -phenylethylbenzylideneimine and the trimethylsilyl enol ether of acety
Autor:
P. Patteri, L. Catani, K. Honkavaara, M. G. Castellano, L. Wartski, X. Artru, D. Giove, Alessandro Variola, R. Chehab, M. Taurigna-Quere
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 410:148-158
Optical Transition Radiation (OTR) provides an attractive method for diagnostics on electron/positron beams of small dimensions at high energies (GeV). However, some limits on the geometrical resolution at very high energies have been often discussed
Autor:
Françoise Froment, L. Wartski, Martine Castellà-Ventura, Tekla Strzalko, Jacqueline Seyden-Penne, Jacques Corset
Publikováno v:
Journal of Organic Chemistry
Journal of Organic Chemistry, 1998, 63 (10), pp.3287-3294. ⟨10.1021/jo9614497⟩
Journal of Organic Chemistry, 1998, 63 (10), pp.3287-3294. ⟨10.1021/jo9614497⟩
New contributions from near-infrared FT-Raman and IR spectroscopies to the structure of [PhCHCNLi]n (1) in solution evidence that only two species, a monomeric ion pair 2 and a dimeric one 4, are i...
Publikováno v:
Review of Scientific Instruments. 67:895-900
We recall the different classes of electromagnetic field excited ion sources and their characteristic features in the scope of industrial applications. Emphasis is laid on various criteria and conditions: long source lifetimes, intense inert or react
Publikováno v:
Acta Crystallographica Section C Crystal Structure Communications. 52:207-210
For the title compounds, C24H29NO (I) and C22H22F3NO (II), the cyclohexane ring adopts a chair conformation. Both compounds exhibit a cis ring-fused exo configuration. When the N atom bears a phenyl ring and the C(2) atom is substituted by a 2,4,6-tr
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 101:459-463
This paper describes an optimal design of a simple and compact ECR ion source of coaxial shape which belongs to the antenna type ion sources at 2.45 GHz. Avoidance of dielectric pieces in the microwave plasma and careful dimensioning of the antenna a
Publikováno v:
Journal of Organic Chemistry
Journal of Organic Chemistry, 2012, 77 (15), pp.6431-6442. ⟨10.1021/jo300758g⟩
Journal of Organic Chemistry, 2012, 77 (15), pp.6431-6442. ⟨10.1021/jo300758g⟩
Mechanisms of alkylation by PhCH(2)Cl or CH(3)I in THF and of deuteriation by DCl (4 N in D(2)O) in THF or THF-toluene of lithiated phenylacetonitrile monoanions and dianions obtained with LHMDS, LDA, or n-BuLi are studied by vibrational and NMR spec
Publikováno v:
Tetrahedron. 50:8445-8456
Lewis acid catalyzed cyclization of lactones 1 – 4 or cyclohexanone 5 bearing trans vicinal aroyl and allylic moieties provided stereoselecti