Application of a novel chromophoric reagent, 2,2′-binaphthyl-3,3′-dicarbonyl cyanide, to the absolute configuration determination of chiral secondary alcohols
作者:Toshio Fujiwara、Yuka Taniguchi、Yuri Kokuryu、Yuumi Baba、Daiki Kawano、Yuuki Kawakami、Shouta Suzuki、Yukiteru Katsumoto、Minoru Ozeki、Hiroki Iwasaki、Ichiro Takahashi、Naoto Kojima、Masayuki Yamashita、Shinzo Hosoi
DOI:10.1016/j.tetlet.2020.151984
日期:2020.6
3′-dicarbonyl cyanide possessing two reaction sites was designed and synthesized as a new chromophoric reagent for exciton-coupled circular dichroism (ECCD), which is more effective in determination of the absolute stereochemistry of the target chiral alcohols than 2,2′-binaphthyl-3-methoxycarbonyl-3′-carbonyl cyanide, which contains only one reaction site. The CD spectra of the 2,2′-binaphthyl diesters
设计并合成了具有两个反应位点的2,2'-联萘基-3,3'-二羰基氰化物作为激子偶联圆二色性(ECCD)的新发色试剂,在确定目标的绝对立体化学方面更有效手性醇比2,2'-联萘-3-甲氧基羰基-3'-羰基氰化物仅包含一个反应位点。衍生自手性仲醇的2,2'-联萘二酯的CD光谱显示中心在240 nm处的双符号曲线,其中Δε值约为联萘甲基单酯的两倍。