作者:Gareth J. Rowlands、Rebecca J. Severinsen、Jenna K. Buchanan、Karl J. Shaffer、Heather T. Jameson、Nishani Thennakoon、Ivo Leito、Märt Lõkov、Agnes Kütt、Robert Vianello、Ines Despotović、Nena Radić、Paul G. Plieger
DOI:10.1021/acs.joc.0c01428
日期:2020.9.4
Quinolino[7,8-h]quinoline is a superbasic compound, with a pKaH in acetonitrile greater than that of 1,8-bis(dimethylaminonaphthalene) (DMAN), although its synthesis and the synthesis of its derivatives can be problematic. The use of halogen derivatives 4,9-dichloroquinolino[7,8-h]quinoline (16) and 4,9-dibromoquinolino[7,8-h]quinoline (17) as precursors has granted the formation of a range of substituted
喹啉基[7,8- h ]喹啉是一种超碱性化合物,在乙腈中的ap K aH大于1,8-双(二甲基氨基萘)(DMAN)的ap K aH,尽管其合成及其衍生物的合成可能会出现问题。卤素衍生物4,9-二氯喹啉[7,8- h ]喹啉(16)和4,9-二溴喹啉[7,8- h ]喹啉(17)作为前体的使用允许形成一系列取代的喹啉喹啉。喹啉喹啉的碱性和其他性质可以通过包含合适的官能度来改变。实验获得的喹啉基的p K aH值[7,8- h]喹啉衍生物显示,N 4,N 4,N 9,N 9-四乙基喹啉[7,8 - h ]喹啉-4,9-二胺(26)比喹啉[7,8- h ]喹啉具有更高的碱性。计算得到的p ķ AH与二甲基氨基官能quinolinoquinolines(NME的值2),1,1,3,3-四甲基胍基(N = C(NME 2)2)或Ñ,Ñ,Ñ ',Ñ ',Ñ “,Ñ”-六甲基磷酸亚氨基三酰胺(N═P(NMe