Novel synthesis and properties of 7,9-dimethylcyclohepta[b]pyrimido[5,4-d]furan-8(7H),10(9H)-dionylium tetrafluoroborate: autorecycling oxidation of some alcohols under photo-irradiation
作者:Shin-ichi Naya、Hisashi Miyama、Kenji Yasu、Tohru Takayasu、Makoto Nitta
DOI:10.1016/s0040-4020(03)00118-2
日期:2003.3
low reduction potential at −0.58 (V vs Ag/AgNO3), upon cyclic voltammetry (CV). In a search for the reactivity, reactions of 9·BF4− with some nucleophiles, hydroxide, hydride, amines, thiols, and methanol, were carried out to exhibit that the introduction of nucleophiles is dependent on the nucleophile itself. The photo-induced oxidation reactions of some alcohols catalyzed by 9·BF4− under aerobic
从2-氯代四氢萘酮与巴比妥酸开始的三步反应提供了新的7,9-二甲基环庚[b]嘧啶基[5,4- d ]呋喃-8(7 H),10(9 H)-四氟硼酸二ony鎓(9 ·BF)4 - ),这是5-乙基-3- methyllumiflavinium离子的等电子化合物。阳离子9的稳定性由p K R +值表示,该值通过分光光度法确定为ca。6.0。在循环伏安法(CV)下,电化学还原9显示出在-0.58(V vs Ag / AgNO 3)的低还原电位。在寻找反应活性时,9 ·BF的反应4 -与某些亲核试剂,氢氧化物,氢化物,胺,硫醇,和甲醇,进行了以显示出,引入的亲核试剂的是依赖于亲核试剂本身。通过催化一些醇的光诱导的氧化反应9 ·BF 4 - [基于化合物有氧条件下进行,以得到在超过100%的产率相应的羰基化合物9 ·BF 4 - ],提示的氧化功能9 ·BF 4 -朝向autorecycling过程醇