Ester- and ketone-substituted (±)-1-alkyl-6-nitro-1,2,3,4-tetrahydroquinolines by a tandem SNAr-Michael reaction
作者:Richard A. Bunce、Eric J. Lee
DOI:10.1002/jhet.460
日期:——
addition (acceptor became part of the final ring) followed by an SNAr ring closure. The current reactions proceed in 82–97% yields in DMSO using primary amines that are unbranched at the α carbon. The synthesis of the reaction substrates as well as process optimization, mechanistic studies to elucidate the reaction chronology and comparisons with the endo Michael variant are presented. J. Heterocyclic
酯和酮取代的(±)-1-烷基-6-硝基-1,2,3,4-四氢喹啉的合成是由在C5处被C5取代的2个戊烯酸酯和2个戊烯-1-酮合成的。 2-氟-5-硝基苯基。环化涉及S N Ar反应,随后是迈克尔加成反应,该加成反应发生在最终环的外。先前报道的这种环切形式是先进行迈克尔内切加成(受体成为最终环的一部分),然后进行S NAr环扣。当前的反应使用在α碳上无支链的伯胺,在DMSO中以82–97%的收率进行。提出了反应底物的合成以及工艺优化,阐明反应时间顺序的机理研究以及与内迈克尔基变体的比较。J.杂环化学。(2010)。
Preparation and characterization of N-benzyl-2-methyl-4-nitroaniline (BNA) single crystals by physical vapour transport (PVT) technique
作者:A. Mythili、K. Srinivasan
DOI:10.1016/j.molstruc.2023.135593
日期:2023.8
slow-growing and morphologically important facets amongst others present in the grown BNA singlecrystal. Fast growth along ‘+c’ direction and no growth along ‘-c’ direction was identified due to the supersaturation-dependant anisotropic growth nature of BNA. Crystal purity and quality are confirmed by singlecrystal X-ray diffraction study. In addition, the role of intermolecular interactions, electrostatic
An object of the present invention is to produce a non-conventional high-quality BNA single crystal. Another object of the present invention is to provide a process for producing the above-described high-quality BNA single crystal. Specifically, the present invention provides a BNA crystal characterized by having a half-value width of diffraction peak X-ray intensity of 100 seconds or less in a rocking curve measurement by X-ray diffraction method.
本发明的一个目的是生产一种非常规的高质量 BNA 单晶体。本发明的另一个目的是提供一种生产上述高质量 BNA 单晶体的工艺。具体地说,本发明提供了一种 BNA 晶体,其特征是在用 X 射线衍射法测量摇摆曲线时,衍射峰 X 射线强度的半值宽度为 100 秒或更小。
Optical response measuring device and optical response measuring method
申请人:RIKEN
公开号:US10345224B2
公开(公告)日:2019-07-09
An optical response measuring device is provided with a light source, first and second wavelength conversion elements and a light intensity sensor array. The light source generates a pair of light beams including light beams of first and second wavelengths, and the first wavelength conversion element generates measurement light. The measurement light is irradiated on an object for measurement and a detection light having first phase and second phase is obtained in response to this irradiation. A reference light that carries the phase of the pair of the pair light beams and the detection light both pass through a second wavelength conversion element to obtain a modulated reference light have first and second intensities. The first and second local intensities are then measured by the light intensity sensor array.
Terahertz wave generation apparatus and inspection apparatus
申请人:Satoh Takumi
公开号:US10481467B2
公开(公告)日:2019-11-19
A terahertz wave generation apparatus includes a plurality of laser light sources configured to generate laser beams respectively having different wavelengths; and a terahertz wave generating element configured to receive the laser beams having different wavelengths and generate a terahertz wave from the laser beams. The plurality of laser light sources include fiber laser light sources respectively including parameters that can be controlled independently, and the terahertz wave generating element includes a nonlinear optical crystal.