13C{1H} NMR spectra of CX obtained by the gas–solid reaction and ripened for 7 h;1 (a) entire spectrum; (b) substituent region; (c) ring carbon region. View chapterExplore book Perspective on the Hyperpolarisation Technique Signal Amplification by Reversible Exchange (SABRE) in NMR ...
Using bis(pinacolato)diboron (B2Pin2) under catalytic [Ir(COD)OMe]2 and 4,4′-di-tert-butyl-2,2′-dipyridyl (dtbpy) as the ligand in absolute heptane at 80 °C for ≥17 h, C12-boronate ester 1 was obtained as the single isomer (Fig. 2a). This compound proved to be unstable...
(6.0 × 10−3 M) after irradiation (λex = 300 ± 10 nm; 63.9–66.9 mW) under CO2 () or N2 (···), and those of 1 (2.0 × 10−3 M) under CO2 () or N2 (—) in THF (8 h; room temperature), together with spectrum of commercial DBA ()...
The infrared spectrum of the ν12 fundamental band of ethylene (C2H4) has been measured with an unapodized resolution of 0.004 cm1 in the frequency range of 1380–1500 cm1 using the Fourier transform technique. By assigning and fitting a total of 1387 infrared transitions using a Watson's A-...
./test-Z80 -p depot/firmware -p depot/software/POSIX -p"depot/software/ZX Spectrum"-a The tool supports options and can run the tests individually (type./test-Z80 -hfor help). If you prefer to run all tests throughCTest, use this command: ...
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CreateModelBuff(ge::Model& irModel,ModelBufferData& output) CreateModelBuff(ge::Model& irModel, ModelBufferData& output, uint32_t customSize) Build BuildIRModel(ge::Model& irModel, ModelBufferData& output) BuildIRModel(ge::Model& irModel, ModelBufferData& output, const BuildOptions&...
while no absorp- tion corresponding to pyridinium ion Ep was observed (cf. Supplementary Figure 58 for in situ IR spectra). Conclusion In summary, we have developed a general method for the metal-free intermolecular C–H functionalization of alkenes with secondary amides. This method provides a ...
Pentacyclic triterpenoids (PTs) constitute one of the biggest families of natural products, many with higher oxidation state at the D/E rings possess a wide spectrum of biological activties but are poorly accessible. Here we report a site-selective C-H hydroxylation at the D/E rings of PTs pa...