作者:Akihiro Orita、Junzo Otera、Xin Yang、Daisuke Matsuo、Yoshinori Suzuma、Jing-Kun Fang、Feng Xu、Shingo Kajiyama、Nagatoshi Koumura、Kohjiro Hara
DOI:10.1055/s-0030-1261223
日期:2011.10
A protecting group Ph2P(O) for terminal ethyne was newly developed. This protecting group can be introduced readily to terminal ethyne by CuI-catalyzed phosphination and subsequent oxidation with H2O2. Ph2P(O)-protected ethynes remained intact in Sonogashira coupling, and their high polarity enabled easy separation of the desired coupling product from by-products. By treatment with t-BuOK, Ph2P(O)-protected
新开发了末端乙炔保护基Ph 2 P(O)。该保护基可以通过CuI催化的磷酸化并随后用H 2 O 2氧化而容易地引入末端乙炔。在Sonogashira偶联中,Ph 2 P(O)保护的乙炔保持完好无损,并且它们的高极性使得可以轻松将所需的偶联产物与副产物分离。通过用t -BuOK处理,Ph 2 P(O)保护的乙炔转化为相应的末端乙炔。 炔烃-磷酸化-保护基-偶联