Investigations into the quinate to shikimate transformation have been carried out, the results of which have been exploited in the synthesis of a novel difluoromethylene homologue of shikimic acid from (-)-quinic acid. Martin's sulfurane {Ph2S[OC(CF3)(2)Ph](2)} was the reagent of choice for the key dehydration step of this synthesis. The results of investigations into the synthesis of the important natural product analogue, 6,6-difluoroshikimic acid are also reported. (C) 2003 Elsevier Science Ltd. All rights reserved.
METAL COMPLEX, LIGHT-EMITTING DEVICE, AND IMAGE DISPLAY APPARATUS
申请人:HASHIMOTO MASASHI
公开号:US20070259207A1
公开(公告)日:2007-11-08
There are provided a metal complex which is used as a novel compound for an organic EL device and an organic light-emitting device which uses the metal complex and has an optical output with high efficiency and high luminance. The novel metal complex has, in a partial structure thereof, a non-aromatic ring structure containing at least one olefin and an alkylene group containing at least one F atom, and an unsaturated heterocyclic ring structure containing at least one nitrogen atom. The organic light-emitting device includes a pair of electrodes including an anode and a cathode and at least one layer including an organic compound and interposed between the pair of electrodes, in which the layer including the organic compound contains a metal complex represented by the following structural formula.