作者:Norma J. Tom、Elizabeth M. Ruel
DOI:10.1055/s-2001-15221
日期:——
The addition of substituted anilines to ”vinamidinium" bis-tetrafluoroborate salt 1 [2-dimethylaminomethylene-1,3-bis(dimethylimmonio)propane bis-tetrafluoroborate], followed by cyclization of the resulting imino-eneamine salt and hydrolysis of the masked aldehydes 2, provide the corresponding 3-formyl quinolines 3. While the condensation of both 1 and its analogous bis-perchlorate salt and amidines are known to provide pyrimidines, we believe this is the first example of a quinoline annulation sequence with ”vinamidinium" bis-tetrafluoroborate salt 1 and anilines.
将取代的苯胺加到 "乙脒 "双四氟硼酸盐 1 [2-二甲基氨基亚甲基-1,3-双(二甲基亚氨 基)丙烷双四氟硼酸盐]中,然后将生成的亚氨基烯胺盐环化,并水解被掩蔽的醛 2,从而得到相应的 3-甲酰基喹啉 3。虽然已知 1 及其类似的双高氯酸盐与脒的缩合可生成嘧啶,但我们认为这是第一个用 "乙烯脒 "双四氟硼酸盐 1 和苯胺进行喹啉环化反应的实例。