A series of N2,N8-bis(nitrogen-containing heterocycle)-yl-2,8-dicarboxamide-Tröger’s bases were synthesized. The most efficient one, N2,N8-di(4H-1,2,4-triazol-4-yl)-6H,12H-5,11-methanodibenzo[b,f][1,5]diazocine-2,8-dicarboxamide (4d), was used as bifunctional catalyst to promote the one-step one-pot preparation of the chromeno[3′,4′:4,5]furo[2,3-b]indoles or naphtho[2′,3′:4,5]furo[2,3-b]indoles with
合成了一系列N 2 , N 8 -双(含氮杂环)-yl-2,8-二甲酰胺-Tröger碱。最有效的一种,N 2 , N 8 -di(4 H -1,2,4-triazol -4-yl)-6 H ,12 H -5,11-methanodibenzo[ b , f ][1,5] diazocine-2,8-dicarboxamide ( 4d ),用作双功能催化剂,促进色烯[3',4':4,5]
呋喃[2,3- b ]
吲哚的一步一锅法制备或
萘[2',3':4,5]
呋喃[2,3- b]
吲哚与 CuI 通过
4-羟基
香豆素(或
2-羟基-1,4-萘醌)、取代的
苯甲醛和异
氰化物的级联 Aldol-[4 + 1] 环加成-分子内 Ullmann 反应。通过1 H NMR 滴定和对照实验研究了合理的催化机理。 图形概要