Reaction of N-fluoropyridinium fluoride with isonitriles and TMSN3: a convenient one-pot synthesis of tetrazol-5-yl pyridines
作者:Alexander S. Kiselyov
DOI:10.1016/j.tetlet.2005.05.066
日期:2005.7
Reaction of N-fluoropyridiniumfluoride generated in situ with a series of isonitriles and TMSN3 led to the formation of the corresponding tetrazol-5-yl pyridines in good yields (37–84%). A similar reaction sequence for quinoline yielded the respective derivatives of 2-quinoline. The proposed reaction mechanism involves the intermediate formation of a highly reactive carbene species.
[EN] SUBSTITUTED 1,2,3-TRIAZOLES AS NR2B-SELECTIVE NMDA MODULATORS<br/>[FR] 1,2,3-TRIAZOLES SUBSTITUÉS UTILISÉS COMME MODULATEURS DE NMDA SÉLECTIFS DE NR2B
申请人:JANSSEN PHARMACEUTICA NV
公开号:WO2017139428A1
公开(公告)日:2017-08-17
Substituted 1,2,3-triazoles as NR2B receptor ligands. Such compounds may be used in NR2B receptor modulation and in pharmaceutical compositions and methods for the treatment of disease states, disorders, and conditions mediated by NR2B receptor activity.
A general catalytic method using a Mn‐porphyrin‐based catalytic system is reported that enables two different reactions (click reaction and denitrogenative annulation) and affords two different classes of nitrogen heterocycles, 1,5‐disubstituted 1,2,3‐triazoles (with a pyridyl motif) and 1,2,4‐triazolo‐pyridines. Mechanistic investigations suggest that although the click reaction likely proceeds through
catalytic amount of Fe(TPP)Cl and Zn dust. The reaction precludes the traditional, more favored click reaction between an organic azide and alkynes, and instead proceeds by an unprecedented metalloradicalactivation. The method is anticipated to advance access to the construction of important basic nitrogen heterocycles, which will in turn enable discoveries of new drug candidates.
Protonation of triethyl (2-pyridylimido)phosphates
作者:R. U. Amanov、E. I. Matrosov、M. Yu. Antipin、A. A. Khodak、A. G. Matveeva、Yu. M. Polikarpov、Kh. T. Sharipov、Yu. T. Struchkov、M. I. Kabachnik
DOI:10.1007/bf00699979
日期:1993.1
Protonation of triethyl (2-pyridylimido)phosphates has been studied by potentiometric titration in nitromethane, IR and NMR spectroscopy, and X-ray structure analysis. The substances studied are protonated in one step at the N-atom of the pyridine ring. The protonated cations may be represented, according to the X-ray data, as a resonance of two structures: pyridinium and pyridoniminium; the contribution
已经通过硝基甲烷中的电位滴定、IR 和 NMR 光谱以及 X 射线结构分析研究了(2-吡啶基亚胺基)磷酸三乙酯的质子化。所研究的物质一步在吡啶环的 N 原子处质子化。根据 X 射线数据,质子化的阳离子可以表示为两种结构的共振:吡啶鎓和吡啶鎓;后者的贡献可能相当可观。已经注意到在吡啶亚胺磷酸盐 (PIP) 质子化后 POEt 基团的光谱参数的变化。