CAS: 6448-95-9; Pigment Red 22

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CAS号92-77-3 色酚AS

萘酚,2-Methyl-5-Nitroaniline Diazonium Fluoroboric Salt置于sodium Hydroxide体系中,用 N-甲基吡咯烷酮 作为反应溶剂,以61.7%的收率获得产物颜料红22
参考文献:Synthesis And Properties Of Azonaphtharylamide Pigments Having Arylamide Groups At 2-And 7-Positions
标题:Synthesis And Properties Of Azonaphtharylamide Pigments Having Arylamide Groups At 2-And 7-Positions
摘要:We Studied Two Azonaphtharylamide Pigments Having Arylamide Groups At The 2-And 7-Positions On The Naphthol Ring. Presence Of The 7-Substited Amide Group Distinguishes The Pigments From Conventional Azonaphtharylamide Pigments Derived From 3-Hydroxy-2-Naphthoic Acid. The 7-Substituent Caused A Hyperchromic Effect But Did Not Produce Bathochromic Shift In The Optical Absorption Spectra In Solution Compared With The Corresponding 7-Unsubstituted Counterparts. Molecular Geometry Optimizations Through Semi-Empirical Mo Calculations Showed That Extent Of The Chromophore Systems In The Pigments With And Without The 7-Substituent Is Nearly The Same,Which Is Consistent With Absence Of The Bathochromic Shift. The Mo Calculations Also Showed That The Mos Localized In The 7-Substituents Are Involved In The Electronic Transitions In The Longest Wavelength Bands Of The Pigments,Which Is Responsible For The Hyperchromic Effect. The 7-Substituted Pigments Exhibited Better Resistivity To Light And Heat Than The 7-Unsubstituted Ones. (C) 2014 Elsevier B.V. All Rights Reserved.
DOI:10.1016/j.Molstruc.2014.12.011