Novel C1-symmetric chiral crown ethers bearing rosin acids groups: synthesis and enantiomeric recognition for ammonium salts
作者:Lu-zhi Liu、Chun-huan He、Lin Yang、Yan Huang、Qiang Wu、Wen-gui Duan、Heng-shan Wang、Ying-ming Pan
DOI:10.1016/j.tet.2014.10.050
日期:2014.12
novel C1-symmetric chiralcrownethers including 28-crown-8, 20-crown-6, 17-crown-5 and 14-crown-3 (9a–m) were synthesized and their enantiodiscriminating abilities with protonated primary amines (10–14) were examined by 1H NMR spectroscopy. 20-crown-6 crownethers exhibited good chiralrecognition properties toward these guests and showed different complementarity to some chiral guests, indicating
合成了四种新型的C 1-对称的手性冠醚,包括28冠8、20冠6、17冠5和14冠3(9a - m),以及它们与质子化伯胺的对映能力。 (10 – 14)人接受了1次检查1 H NMR光谱。20冠6冠醚对这些客体表现出良好的手性识别特性,并且与某些手性客体表现出不同的互补性,表明20冠6冠醚可以用作手性NMR溶剂确定这些客人的对映体纯度。此外,还通过计算建模和实验计算研究了宿主与客体之间的结合模型和结合位点。
Process for the preparation of terbinafine and salts thereof
申请人:Kaspi Joseph
公开号:US20060004230A1
公开(公告)日:2006-01-05
A process for the preparation of Terbinafine and salts thereof by reacting 1-chloro-6,6-dimethylhept-2-en-4-yne and N-methyl-N-(1-naphthylmethyl)amine in a basic aqueous medium is disclosed. Also disclosed is a process for the preparation of 1-chloro-6,6-dimethylhept-2-en-4-yne.
作者:José G. Hernández、Karen J. Ardila-Fierro、Deborah Crawford、Stuart L. James、Carsten Bolm
DOI:10.1039/c7gc00615b
日期:——
Mechanochemical chemoenzymatic peptide and amidebondformation catalysed by papain was studied by ball milling. Despite the high-energy mixing experienced inside the ball mill, the biocatalyst proved stable and highly efficient to catalyse the formation of α,α- and α,β-dipeptides. This strategy was further extended to the enzymatic acylation of amines by milling, and to the mechanosynthesis of a derivative
[EN] BENZO [B] [1, 4] OXAZIN DERIVATIVES AS CALCIUM SENSING RECEPTOR MODULATORS<br/>[FR] DÉRIVÉS BENZO[B][1,4]OXAZINE EN TANT QUE MODULATEURS DE RÉCEPTEURS DE DÉTECTION DE CALCIUM
申请人:LUPIN LTD
公开号:WO2012127385A1
公开(公告)日:2012-09-27
Compounds of Formula (I) along with processes for their preparation that are useful for treating, managing and/or lessening the diseases, disorders, syndromes or conditions associated with the modulation of calcium sensing (Ca SR) receptors. Methods of treating, managing and/or lessening the diseases, disorders, syndromes or conditions associated with the modulation of calcium sensing (Ca SR) receptors of Formula (I).
One‐Pot Synthesis of Primary and Secondary Aliphatic Amines via Mild and Selective sp
<sup>3</sup>
C−H Imination
作者:Subrata K. Ghosh、Mengnan Hu、Robert J. Comito
DOI:10.1002/chem.202102627
日期:2021.12.15
One for all: We report the sp3 C−H imination of simple alkanes and functionalized molecules, which provides primaryamines on workup. Our method shows good site selectivity and functional group tolerance, which we have used for the synthesis of complex amines. We characterize a unique mechanism involving radical rebound to imine.