Acetonitrile-Mediated Synthesis of 2,4-Dichloroquinoline from 2-Ethynylaniline and 2,4-Dichloroquinazoline from Anthranilonitrile
作者:Dae Yoon Chi、Jae Hak Lee、Byoung Se Lee、Hyunik Shin、Do Hyun Nam
DOI:10.1055/s-2005-922790
日期:——
2,4-Dichloroquinolines and 2,4-dichloroquinazolines were synthesized from 2-ethynylanilines and anthranilonitriles, respectively, using diphosgene in acetonitrile and heating at 130 °C or 150 °C for 12 hours. This reaction was applied to the synthesis of 4,6-dichloropyrazolo[3,4-d]pyrimidine (dichloro-9H-isopurine). The postulated mechanism is also described.
2,4-二氯喹啉和 2,4-二氯喹唑啉分别由 2-乙炔基苯胺和邻氨基苯甲腈合成,在乙腈中使用双光气并在 130 °C 或 150 °C 下加热 12 小时。该反应用于合成 4,6-二氯吡唑并[3,4-d]嘧啶(二氯-9H-异嘌呤)。还描述了假定的机制。