Chemo-enzymatic cascade processes are invaluable due to their ability to rapidly construct high-value products from available feedstock chemicals in a one-pot relay manner. In an article, author is Hutchings, MG, once mentioned the application of 10541-83-0, Name is 4-(Methylamino)benzoic acid, molecular formula is C8H9NO2, molecular weight is 151.1626, MDL number is MFCD00002535, category is isothiazole. Now introduce a scientific discovery about this category, COA of Formula: C8H9NO2.
Additivity of substituent effects on the visible absorption spectra of some heteroarylazo compounds: the influence of solvent
Pronounced solvatochromic shifts are observed in the visible spectra of two series of heteroarylazobenzene derivatives based on m-acetylamino- and m-methyl-N,N-diethylaniline, measured in various solvents. The heteroaryl azo component of these dyes can be viewed as a thiophene ring substituted by cyano, nitro, alkoxycarbonyl, or ring aza (to give thiazole and isothiazole derivatives). Free-Wilson analysis has shown that the influence of each of the substituents is constant across all molecules within the two series for a given solvent. However, the substituent increments vary between different solvents and correlate with the Kamlet-Taft dipolarity/polarisability parameter pi* of the solvents. There appears to be no intuitive explanation for the relative solvent variation of different substituents, but Onsager theory suggests sensitivity to the relative size and shape of the dyes. Visible absorption maxima are predicted for unknown heteroarylazo compounds related to those studied. (C) 2000 Elsevier Science Ltd. All rights reserved.
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Reference:
Isothiazole – Wikipedia,
,Isothiazole – ScienceDirect.com