The Proton Sponge Effect: Substitution of Quino[7,8-<i>h</i>]quinoline and the First Structurally Characterised Derivatives
作者:Karl J. Shaffer、Daniel C. Parr、Marco Wenzel、Gareth J. Rowlands、Paul G. Plieger
DOI:10.1002/ejoc.201201131
日期:2012.12
A new route to unsymmetrical derivatives of quino[7,8-h]quinoline was developed. Substitutions at the 2,11-, 4,9- and 6,7-positions of quino[7,8-h]quinoline were also successfully performed. X-ray crystal structure determinations of the resulting products revealed the propensity for derivatives of this molecule to exist in either stabilised keto or imino forms as a result of the formation of a strong
开发了不对称衍生物的喹诺[7,8-h] 喹啉的新途径。2,11-、4,9- 和 6,7- quino[7,8-h] 喹啉的取代也成功进行。所得产物的 X 射线晶体结构测定表明,由于形成了强大的分子内 N-H…N 氢键,该分子的衍生物倾向于以稳定的酮或亚氨基形式存在。