Citation: Lian He YU, Yang Fu MING, Mei Gong FAN. SYNTHESIS,PHOTOCHROMIC PROPERTIES OF PYRRYL SUBSTITUTED HETEROCYCLIC FULGIDES[J]. Chinese Chemical Letters, ;1993, 4(3): 199-202.
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Nine new 3-acetyl pyrrole derivatives and corresponding 3-pyrryl substituted heterocyclic fulgides:3-pyrryl-ethylidene(isopropylidene)succinic anhydrides have been synthesized and characterized.Their photochromic behavour in several organic solvents were investigated.The coloured form of fulgide Ⅱc,(E)-α-(1,2,4-trimethyl-3-pyrryl)-ethylidene(isopropylidene)succinic anhydride,shows absorption maxmium at 715nm in acetonitrile.It is the longest absorption among the known photochromic fulgides
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