100398-33-2

Upstream product

• 6450-19-7 1-<4-Chlorphenyl-amino>-7-<4-chlorphenyl-imino>-1,3,5-cycloheptatrien 
• 106-47-8 4-chloro-aniline 
• 3839-48-3 2-chlorotropone 
• 38768-08-0 2-(tosyloxy)tropone 
• 533-75-5 2-hydroxy-2,4,6-cycloheptatrien-1-one 
• 2267-32-5 5,5,6,6-tetrafluoro-cyclohepta-1,3-diene 

Downstream Products

• 1265478-18-9 C₁₃H₁₀ClNO*C₂₄H₄₀O₄ 

Relevant academic research and scientific papers

Novel fluorophores: Syntheses and photophysical studies of boron-aminotroponimines

The syntheses and photophysical study of novel fluorescent boron-aminotroponimine complexes are described. The chemical structure of one of the boron complexes was confirmed by single crystal X-ray analysis, which shows the appearance of the distorted tetrahedral geometry at boron. The photophysical studies of these complexes revealed that the boron-aminotroponimines are fluorescent molecules with quantum yields ca. 0.17–0.28.

Prototropic tautomerism and solid-state photochromism of N-phenyl-2-aminotropones

N-(4-X-phenyl)-2-aminotropones (X = methoxy, chloro, or nitro substituent) and their clathrate crystals with deoxycholic acid (DCA) were prepared and their prototropic phenomena were determined. Each 2-aminotropone derivative existed as a keto-amine form

Solid-state structure and tautomerism of 2-aminotroponimines studied by X-ray crystallography and multinuclear NMR spectroscopy

Structural studies in the solid state by X-ray crystallography and by 13C and 15N CPMAS NMR spectroscopy carried out on a series of 2-aminotroponimine derivatives 2-5 has allowed to establish the existence of hydrogen bonding and to determine the most stable tautomer. Almost all the structures reflect the classical double-well potential function for the N-H...N hydrogen bonds. Only in the case of the compound N-(pyrrol-1-yl)-2-(pyrrol-1-ylamino)troponimine (5) the crystal structure shows two independent molecules, one with a classical hydrogen bond and another with either a single-well or a low-barrier hydrogen bond. The structure of this compound is discussed with the use of the solid-state NMR spectroscopic data. 2-Aminotropones, as intermediates to the 2-aminotroponimines, show the oxo-tautomer as the stable form. B3LYP/6-31G* calculations are used to rationalise the experimental results. Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004.