Approach to a Substituted Heptamethine Cyanine Chain by the Ring Opening of Zincke Salts
作者:Lenka Štacková、Peter Štacko、Petr Klán
DOI:10.1021/jacs.9b02537
日期:2019.5.1
Cyaninedyes play an indispensable and central role in modern fluorescence-based biological techniques. Despite their importance and widespread use, the current synthesismethods of heptamethine chain modification are restricted to coupling reactions and nucleophilic substitution at the meso position in the chain. Herein, we report the direct transformation of Zincke salts to cyaninedyes under mild
Aryl triflate compounds can generate a strong acid when exposed to irradiation of radiation and can be used as an acid generator in a radiologically-acid-producing agent system and a radiosensitive composition.
4-Nitrophenyltriflate and 4-Nitrophenylnonaflate as New Perfluoroalkanesulfonyl Transfer Agents: Experimental and Computational Studies
作者:Luc Neuville、Antony Bigot、Marie Elise Tran Huu Dau、Jieping Zhu
DOI:10.1021/jo990559l
日期:1999.10.1
4-Nitrophenyltriflate as a new triflating agent
作者:Jieping Zhu、Antony Bigot、Marie Elise、Tran Huu Dau
DOI:10.1016/s0040-4039(97)00024-5
日期:1997.2
Aryl triflates were prepared under mild conditions using 4-nitrophenyl triflate (1) as a stable, crystalline triflating agent. (C) 1997, Elsevier Science Ltd.