Studies on Isocyanides and Related Compounds: A Novel Synthesis of Pyrroles via Ugi Reaction
作者:Ricardo Bossio、Stefano Marcaccini、Roberto Pepino
DOI:10.1055/s-1994-25565
日期:——
A series of N-substituted 1,3-diaryl-4-cyano-2,5-dihydro-5-oxopyrrole-2-carboxamides 9 is obtained by reacting arylglyoxal anils 6 with isocyanides 3 and cyanoacetic acid (2). Compounds 9 react quickly with diazomethane to give N-substituted 1, 3-diaryl-4-cyano-5-methoxypyrrole-2-carboxamides 12.
通过芳基乙二醛苯胺6与异氰化物3和氰基乙酸(2)反应得到一系列N-取代的1,3-二芳基-4-氰基-2,5-二氢-5-氧代吡咯-2-甲酰胺9。化合物 9 与重氮甲烷快速反应,得到 N-取代的 1, 3-二芳基-4-氰基-5-甲氧基吡咯-2-甲酰胺 12。