Synthesis and Mercurophilic Properties of Dicyanoheptafulvene-Incorporated Dithio-Crown-Ethers from Malononitrile and 5,8,11,14,17-Pentaoxa-2,20-dithiabicyclo[19.4.1]hexacosa-21,23,25-trien-26-one and Its Homologues
作者:Akira Mori、Kanji Kubo、Hitoshi Takeshita
DOI:10.1246/bcsj.67.1094
日期:1994.4
5,8,11,14,17-Pentaoxa-2,20-dithiabicylco[19.4.1]hexacosa-21,23,25-trien-26-one and its homologues gave, via remote substitution, 8,8-dicyanoheptafulvene-incorporated dithio-crown-ether derivatives upon heating with malononitrile in acetic anhydride. This means that 7-acetoxy-7-dicyanomethyl-1,3,5-cycloheptatrienes, ipso-attacked intermediates of malononitrile to acetoxytropylium derivatives, were not
5,8,11,14,17-Pentaoxa-2,20-dithiabicylco[19.4.1]hexacosa-21,23,25-trien-26-one 及其同系物通过远程取代得到 8,8-二氰基七富烯-在乙酸酐中与丙二腈一起加热时掺入二硫代冠醚衍生物。这意味着 7-乙酰氧基-7-二氰基甲基-1,3,5-环庚三烯,丙二腈到乙酰氧基托鎓衍生物的ipso-攻击中间体,不是在空间位阻上形成的。这些二硫冠醚有效地提取和可逆地传输汞 (II) 离子。