Synthesis of Pyrrolo[1,2-<i>a</i>]quinoxaline Derivatives by Lewis Acid-Catalyzed Reactions of 1-(2-Isocyanophenyl)pyrroles
作者:Kazuhiro Kobayashi、Susumu Irisawa、Takeshi Matoba、Takashi Matsumoto、Keiichi Yoneda、Osamu Morikawa、Hisatoshi Konishi
DOI:10.1246/bcsj.74.1109
日期:2001.6
1-(2-Isocyanophenyl)pyrroles have been prepared. They react in moderate to good isolated yields with aldehydes (or ketones), oxiranes, and acetals in the presence of catalytic amounts of diethyl ether–boron trifluoride to give pyrrolo[1,2-a]quinoxalines carrying an oxyalkyl substituent, such as α-hydroxyalkyl, β-hydroxyalkyl, or α-alkoxyalkyl, at the 4-position.
已经制备了 1-(2-异氰基苯基)吡咯。在催化量的二乙醚-三氟化硼存在下,它们与醛(或酮)、环氧乙烷和缩醛以中等至良好的分离产率反应,得到带有氧烷基取代基的吡咯并 [1,2-a] 喹喔啉,例如 α -羟烷基、β-羟烷基或α-烷氧基烷基,在4-位。