Transition-metal-free, visible-light induced cyclization of arylsulfonyl chlorides with 2-isocyanobiphenyls to produce phenanthridines
作者:Lijun Gu、Cheng Jin、Jiyan Liu、Hongyan Ding、Baomin Fan
DOI:10.1039/c4cc01487a
日期:——
A visible-light promoted transformation of 2-isocyanobiphenyls and arylsulfonyl chlorides for the synthesis of phenanthridines under oxidant-free and transition-metal-free conditions was described.
2-异氰基联苯和芳基磺酰氯在无氧化剂和过渡金属的条件下,经可见光促进转化合成菲啰啉。
Indium(III)-Catalyzed Tandem Reaction with Alkynylbenzaldehydes and Alkynylanilines to Heteroaromatic Compounds
Starting from ortho-alkynylbenzaldehydes and ortho-alkynylanilines, In(OTf)3-catalyzedsynthesis of ring-condensed heteroaromatic compounds was developed via a domino intramolecular nucleophilic attack/intermolecular cycloaddition/dehydration reaction.
A metal-free radical oxidative decarboxylation/cyclization of acyl peroxides and 2-isocyanobiphenyls was achieved, leading to 6-aryl phenanthridines as well as 6-alkyl phenanthridines in moderate to good yields. The procedure featured simple conditions and was metal-free and base free. It represents a practical approach to access 6-aryl/alkyl phenanthridines.
Metal-free photocatalyzed cross coupling of aryl (heteroaryl) bromides with isonitriles
作者:Xiangguang Li、Deqiang Liang、Wenzhong Huang、Huanli Sun、Lvsu Wang、Mengran Ren、Baoling Wang、Yinhai Ma
DOI:10.1016/j.tet.2017.10.074
日期:2017.12
A visible-light-catalyzed synthesis of 6-aryl substituted phenanthridines from aryl bromides and 2-isocyanobiphenyls at room temperature has been discovered. This metal-free cross-coupling reaction offers rapid and sustainable access to a series of structurally complex and diverse phenanthridines. The usage of inexpensive Rhodamine 6G as the catalyst with easy operation makes this protocol very practical. (C) 2017 Elsevier Ltd. All rights reserved.
Katritzky, Alan R.; Lan, Xiangfu; Lam, Jamshed N., Chemische Berichte, 1991, vol. 124, # 6, p. 1431 - 1434
作者:Katritzky, Alan R.、Lan, Xiangfu、Lam, Jamshed N.