N-Heterocyclic carbene catalyzed C-acylation reaction for access to linear aminoenones

Lv, Jie; Nong, Yingling; Chen, Kai; Wang, Qingyun; Jin, Jiamiao; Li, Tingting; Jin, Zhichao; Robin, Yonggui

doi:10.1016/j.cclet.2022.05.084

Cited by 6 publications

(5 citation statements)

References 89 publications

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“…The detailed description of temperature distribution measurement in detonation tube external flow field can be found in Ref. [24]. Significantly, there is no difference in optical equipment between the method mentioned in this paper and traditional TDLAS.…”

Section: Application Of Analysis To Experimental Data In Pulsed Deton...mentioning

confidence: 97%

In situ measurement on nonuniform velocity distribution in external detonation exhaust flow by analysis of spectrum features using TDLAS

Huang¹,

Li²,

Weng³

et al. 2022

Chinese Phys. B

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Instantaneous and precise velocity sensing is a critical part of research on detonation mechanism and flow evolution. This paper presents a novel multi-projection tunable diode laser absorption spectroscopy solution, to provide a real-time and reliable measurement of velocity distribution in detonation exhaust flow with obvious nonuniformity. Relations are established between overlapped spectrums along probing beams and Gauss velocity distribution phantom according to the frequency shifts and tiny variations in components of light-of-sight absorbance profiles at low frequencies analyzed by the fast Fourier transform. With simulated optical measurement using H2O feature at 7185.6 cm−1 carried out on a phantom generated using a simulation of two-phase detonation by a two-fluid model, this method demonstrates a satisfying performance on recovery of velocity distribution profiles in supersonic flow even with a noise equivalent absorbance up to 2 × 10−3. This method is applied to the analysis of rapidly decreasing velocity during a complete working cycle in the external flow field of an air-gasoline detonation tube operating at 25 Hz, and results show the velocity in the core flow field would be much larger than the arithmetic average from traditional tunable diode laser doppler velocimetry. This proposed velocity distribution sensor would reconstruct nonuniform velocity distribution of high-speed flow in low cost and simple operations, which broadens the possibility for applications in research on the formation and propagation of external flow filed of detonation tube.

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Section: Application Of Analysis To Experimental Data In Pulsed Deton...mentioning

confidence: 97%

In situ measurement on nonuniform velocity distribution in external detonation exhaust flow by analysis of spectrum features using TDLAS

Huang¹,

Li²,

Weng³

et al. 2022

Chinese Phys. B

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“…We are interested in employing NHC organic catalysts for unconventional transformations and functional molecules [ 33 – 46 ]. Research from Chen et al.…”

Section: Introductionmentioning

confidence: 99%

Access to Axially Chiral Aryl Aldehydes via Carbene-Catalyzed Nitrile Formation and Desymmetrization Reaction

Cai,

Lv,

Shu

et al. 2024

Research

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An approach utilizing N-heterocyclic carbene for nitrile formation and desymmetrization reaction is developed. The process involves kinetic resolution, with the axially chiral aryl monoaldehydes obtained in moderate yields with excellent optical purities. These axially chiral aryl monoaldehydes can be conveniently transformed into functionalized molecules, showing great potential as catalysts in organic chemistry.

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“…[17][18][19] The 5 0 -Oesters of adenosine exhibited antiviral activities against TMV and PVY. 20 These purine nucleosides have three hydroxyl groups, which makes regional selective acylation more difficult, whereas traditional chemical synthesis requires harsh reaction conditions and complex reaction steps. 21,22 Accordingly, we hope to develop a highly regioselective method for the synthesis of purine nucleoside esters.…”

Section: Introductionmentioning

confidence: 99%

Continuous flow biocatalysis: synthesis of purine nucleoside esters catalyzed by lipase TL IM from Thermomyces lanuginosus

Zhang,

Fu,

et al. 2024

RSC Adv.

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N-Heterocyclic carbene catalyzed C-acylation reaction for access to linear aminoenones

Cited by 6 publications

References 89 publications

In situ measurement on nonuniform velocity distribution in external detonation exhaust flow by analysis of spectrum features using TDLAS

In situ measurement on nonuniform velocity distribution in external detonation exhaust flow by analysis of spectrum features using TDLAS

Access to Axially Chiral Aryl Aldehydes via Carbene-Catalyzed Nitrile Formation and Desymmetrization Reaction

Continuous flow biocatalysis: synthesis of purine nucleoside esters catalyzed by lipase TL IM from Thermomyces lanuginosus

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