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11.
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Dominique Fasseur Pascal Cauliez Daniel Couturier Benoît Rigo Sbastien Defretin 《Journal of heterocyclic chemistry》1996,33(6):1951-1957
The 5-methoxycarbonyl group of β-enaminoesters derived from methyl pyroglutamate was transformed into acids, amides and 1,3,4-oxadiazole. 相似文献
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Asymptotic formulae for the summatory function of additive arithmetic functions related to numeration systems given by regular languages are derived. 相似文献
15.
Asymptotic formulae for the summatory function of additive arithmetic functions related to numeration systems given by regular languages are derived.This author is supported by the START project Y96-MAT of the Austrian Science Fund.This author warmly thanks P. Grabner for his kind invitation to Graz and his hospitality.Received February 18, 2002; in revised form September 20, 2002
Published online May 15, 2003 相似文献
16.
Let be a vector lattice of real functions on a set with , and let be a linear positive functional on . Conditions are given which imply the representation , , for some bounded charge . As an application, for any bounded charge on a field , the dual of is shown to be isometrically isomorphic to a suitable space of bounded charges on . In addition, it is proved that, under one more assumption on , is the integral with respect to a -additive bounded charge.
17.
Maria Veronica Rigo Jaetae Seo Wan-Joong Kim SungSoo Jung 《Vibrational Spectroscopy》2011,57(2):315-318
This paper presents the study of surface-enhanced Raman scattering (SERS) for Rhodamine 6G (R6G)-linked gold (Au) assemblies. The nano-assemblies fabricated with Au nanoparticles, having diameters (D) of ~5–40 nm, possessed interparticle gaps of ~0.03–0.2D, respectively. The R6G-linked Au assemblies displayed weak spectral shifts of localized surface plasmon resonance (LSPR) mode at shorter wavelength region and large fractional red-shifts Δλ ~ 0.07–0.47λo at longer wavelength region. The resonant spectral coupling of the nano-assemblies LSPR mode at the longer wavelength region and the optical excitation at ~785 nm, in addition to the highly localized hot spots, could support the large SERS enhancement of R6G-linked Au assemblies. 相似文献
18.
Sahar Al Akoum Ebrik Anne Legrand Benoît Rigo Daniel Couturier 《Journal of heterocyclic chemistry》1999,36(4):997-1000
Condensation of N-trimethylsilylindole with methyl N-trimethylsilyloxymethylpyroglutamate is the best method to obtain methyl N-indolylmethylpyroglutamate. Friedel-Crafts cyclization of the corresponding acid yields a new ketone (1,2,3,5,11,11a-hexahydroindolizino[7,6-b] indole-3,11-dione). 相似文献
19.
G. Del Fiore J. M. Peters L. Quaglia F. Boudjelida M. C. Pardon J. L. Piette R. Cantineau Ch. De Landsheere P. Rigo 《Journal of Radioanalytical and Nuclear Chemistry》1986,104(5):301-315
An automated continuous flow process has been developed for the synthesis of11C-ethanol and11C-butanol. These alcohols were synthesized via the same route. The reaction of11CO2 with methylmagnesium bromide or with n-propylmagnesium chloride, followed by a lithium aluminum hydride reduction and hydrolysis produced respectively11C-ethanol and11C-butanol. Preparation can be completed in 25 min. In each case the radiochemical purity, as determined by high pressure liquid chromatography /HPLC/ was greater than 98%. Biological quality control shows that the products are suitable for human use. The process has been completely automated to limit radiation exposure to personnel, reduce preparation time, and increase reproducibility. 相似文献