Electron-donating methoxyl group position effect on properties of diarylethene derivatives having a pyrazole unit
T Yang, S Pu, B Chen, J Xu
Index: Yang, Tianshe; Pu, Shouzhi; Chen, Bing; Xu, Jingkun Canadian Journal of Chemistry, 2007 , vol. 85, # 1 p. 12 - 20
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Citation Number: 37
Abstract
New types of asymmetrical photochromic diarylethene derivatives having a pyrazole unit, namely 1-[1, 3, 5-trimethyl-1-pyrazol-4-yl], 2-[2-methyl-5-(4-methoxylphenyl)-1-thien-3-yl] perfluorocyclopentene (1a), 1-[1, 3, 5-trimethylpyrazol-4-yl], 2-[2-methyl-5-(3- methoxylphenyl)-1-thien-3-yl] perfluorocyclopentene (2a), 1-[1, 3, 5-trimethyl-pyrazol-4-yl], 2- [2-methyl-5-(2-methoxylphenyl)-1-thien-3-yl] perfluorocyclopentene (3a), and 1-[1, 3, 5- ...
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