| SYNTHESIS,PHOTOCHROMIC PROPERTIES OF PYRRYL SUBSTITUTED HETEROCYCLIC FULGIDES |
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| 摘 要： | Nine new 3-acetyl pyrrole derivatives and corresponding 3-pyrryl substitutedheterocyclic fulgides:3-pyrryl-ethylidene(isopropylidene)succinic anhydrides havebeen synthesized and characterized.Their photochromic behavour in several organicsolvents were investigated.The coloured form of fulgide Ⅱc,(E)-α-(1,2,4-trimethyl-3-pyrryl)-ethylidene(isopropylidene)succinic anhydride,shows absorption maxmium at715nm in acetonitrile.It is the longest absorption among the known photochromicfulgides
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