Nitroketene Acetal Chemistry. 3. Facile Synthesis of Nitroacetic Acid Triarylmethyl Ortho Esters from 1,1-Di(methylsulfanyl)-2-nitroethylene
作者:H. Surya Prakash Rao、S. Sivakumar
DOI:10.1021/jo050308e
日期:2005.5.1
The reaction of 1,1-di(methylsulfanyl)-2-nitroethylene, benzyl alcohols, and sodium hydride furnishes crystalline triarylmethyl ortho esters of nitroaceticacid.
1,1-二(甲基硫烷基)-2-硝基乙烯,苯甲醇和氢化钠的反应提供了硝基乙酸的结晶三芳基甲基原酸酯。
1,1-bis(Methylthio)-2-nitroethene in superacids: NMR study and reactivity of the formed hydroxynitrilium ion
作者:Jean-Marie Coustard
DOI:10.1016/0040-4020(95)00669-y
日期:1995.10
At low temperature in superacids TFSA or HF-SbF5, 1,1-bis(methylthio)-2-nitroethene yields a stable dication with hydroxynitrilium and bis(methylthio)carbocationic sites The first site can be trapped in situ with suitable nucleophiles (aromatics, fluoride) Both sites can be trapped when the acidity is destroyed with MeOH or MeSH, to form in fair to good yield the corresponding α-hydroxyiminoorthothioester