D-Ring取代的11 H-吲哚并[3,2- c ]喹啉(4)是通过自动串联连续分子间Buchwald-Hartwig反应和分子内钯催化的4-氯喹啉(1)上的N-未取代的2芳基化反应制得的-氯苯胺(2)。报道的11 H-吲哚并[3,2- c ]喹啉(4)代表了第一个实例,其中串联催化已用于构建N-未取代的咔啉。
Synthesis of Isocryptolepinevia a Pd-Catalyzed ‘Amination-Arylation’ Approach
作者:Bert U. Maes、Tim H. Jonckers、Guy L. Lemière、Geert Rombouts、Luc Pieters、Achiel Haemers、Roger A. Dommisse
DOI:10.1055/s-2003-38364
日期:——
Isocryptolepine (cryptosanguinolentine) has been synthesized in three steps via a new approach starting from commercially available 4-chloroquinoline and 2-chloroaniline. The new methodology consists of two consecutive palladium-catalyzed reactions; a selective Buchwald-Hartwig amination followed by an intramolecular arylation reaction.
Heteroatom directed photoannulation: synthesis of indoloquinoline alkaloids: cryptolepine, cryptotackieine, cryptosanguinolentine, and their methyl derivatives
作者:T. Dhanabal、R. Sangeetha、P.S. Mohan
DOI:10.1016/j.tet.2006.04.050
日期:2006.6
indoloquinoline alkaloids is described. The reaction of 2,3 and 4-substituted haloquinolines with anilines afforded the respective anilinoquinolines, which upon photocyclization gave the indoloquinolines. By regioselective methylation on quinoline nitrogen, furnished the alkaloids cryptotackieine, cryptosanguinolentine, cryptolepine, and the synthetic isomer isoneocryptolepine. Their methyl derivatives