Results 131 to 140 of about 978 (179)

Chemico-pharmacological evaluation of the methanolic leaf extract of Catharanthus ovalis: GC-MS/MS, in vivo, in vitro, and in silico approaches. [PDF]

Front Pharmacol
Shahriar S, Shermin SA, Hasnat H, Hossain F, Han A, Geng P, Alam S, Mamun AA.   +7 more
europepmc   +1 more source

Acid/Base-Responsive Circularly Polarized Luminescence Emitters with Configurationally Stable Nitrogen Stereogenic Centers. [PDF]

Adv Mater
García-Cerezo P, Codesal MD, David AHG, Le Bras L, Abid S, Li X, Miguel D, Kazem-Rostami M, Champagne B, Campaña AG, Stoddart JF, Blanco V.   +11 more
europepmc   +1 more source

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Solvent-Free Synthesis of Diazocine

Synthesis, 2017
A convenient two-step synthesis of diazocine starting from 2-nitrotoluene is described. The first step, the oxidative dimerization of 2-nitrotoluene, is improved to 95% yield. The second step, the reductive azo cyclization, is performed as a solvent-free reaction with lead powder in a ball mill (51% yield).
Rainer Herges
exaly   +2 more sources

An Optical pH Sensor Based on Diazocine

ChemistrySelect, 2017
Abstract A novel excellent candidate for the optical pH sensor based on diazocine is presented in this paper. Diazocine serves as a cyclooctatetraene analogy which has a nonplanar 8‐membered ring structure with nitrogen atoms.
Zuwei Song, Jianzhong Li
exaly   +2 more sources

1,5‐Diazocine

Angewandte Chemie, 1985
Die stabilen Doppelbindungsisomere 1 und 1′ waren eine der Überraschungen, die die wenig untersuchten 1,5‐Diazocine zu bieten haben. Von anders substituierten Verbindungen dieser Klasse liegt, soweit geprüft, jeweils nur ein Isomer mit fixierten Doppelbindungen vor.
Christoph Schnieders, Walter Huber, Johann Lex, Klaus Müllen   +3 more
openaire   +1 more source

1,2-Diazocines,1,3-Diazocines,Triazocines,and Tetrazocines

ChemInform, 1990
Publisher Summary This chapter discusses the eight-membered heterocycles containing (a) two nitrogens, (b) three nitrogens, and (c) four nitrogens. In this chapter, all the compounds are classified according to the actual relationship of the eight-membered ring nitrogens to each other, regardless of formal nomenclature.
openaire   +2 more sources

Synthesis of 1,5-diazocin-2-ones

Russian Chemical Bulletin, 2021
This review is focused on the synthetic approaches to the eight-membered nitrogen heterocycles, 1,5-diazocin-2-ones, exhibiting promising biological activities. Nomenclature of these compounds is considered and the examples of the natural and pharmacologically important compounds of the 1,5-diazocin-2-one family are given.
J. P. Matheny, A. V. Aksenov, M. Rubin
openaire   +1 more source

Diazocines on Molecular Platforms

European Journal of Organic Chemistry, 2014
AbstractNew diazocines as photochromic switches for the surface functionalization via the “platform approach” were synthesized and characterized. Symmetric diazocines as well as asymmetric molecules based on an indane scaffold were obtained and their photochromic properties were investigated.
Tobias Tellkamp, Jun Shen, Yoshio Okamoto, Rainer Herges   +3 more
openaire   +1 more source

ChemInform Abstract: 1,5‐Diazocine.

Chemischer Informationsdienst, 1985
AbstractDas Diazasemibullvalen (Ia) lagert sich beim Erhitzen in das entsprechende 1,5‐Diazocin um, welches in Form der beiden nicht trennbaren Doppelbindungsisomeren (II) und (III) vorliegt.
C. SCHNIEDERS, W. HUBER, J. LEX, K. + MUELLEN   +3 more
openaire   +1 more source

Synthetic strategies and diversification of dibenzo[1,5]diazocines

Organic & Biomolecular Chemistry, 2023
Recent synthetic approaches and functionalisation of dibenzo[1,5]diazocines, epiminodibenzo[1,5]diazocines and epoxydibenzo[1,5]diazocines are reviewed.
Abdul Qaiyum Ramle, Edward R. T. Tiekink
openaire   +2 more sources