Add time:09/10/2019 Source:sciencedirect.com
Based on a new polyfunctional derivative of dihydroxyisophtalic aldehyde (1) spiropyrans of 1,3-benzoxazin-4-one series with two carbonyl and a hydroxygroup in the [2H]-chromene fragment were synthesized. The results of single crystal X-ray analysis of 6′-carbomethoxy-3,5-dimethyl-8′-formyl-5′-hydroxy-4-oxospiro[1,3-benzoxazine-2,2′-chromene] (7a) helped to establish that condensation of 1,3-benzoxazine-4-onium perchlorates with (1) leading to the formation of spiropyrans occurs on the formyl group located at the position 3 of the starting aldehyde. The obtained spropyrans demonstrate photochromic activity at room temperature. Introduction of an electron donating methoxy group into the heteroarene part of the spiropyran molecule enhances its photocolorability.
We also recommend Trading Suppliers and Manufacturers of 3-Methyl-2H-1,3-benzoxazine-2,4(3H)-dione (cas 1672-01-1). Pls Click Website Link as below: cas 1672-01-1 suppliers
About|Contact|Cas|Product Name|Molecular|Country|Encyclopedia
Message|New Cas|MSDS|Service|Advertisement|CAS DataBase|Article Data|Manufacturers | Chemical Catalog
©2008 LookChem.com,License: ICP
NO.:Zhejiang16009103
complaints:service@lookchem.com Desktop View