A cobalt(III)-catalyzed C–H/N–H bond functionalization for the synthesis of 1-aminoisoquinolines from aryl amidines and diazo compounds has been developed. The reaction proceeds under mild reaction conditions, obviates the need for oxidants, produces only N2 and H2O as the byproducts, and features a broad substrate scope.
已经开发了钴(III)催化的CH / N / H键官能团,用于从芳基am和重氮化合物合成1-氨基异喹啉。反应在温和的反应条件下进行,消除了对氧化剂的需求,仅产生副产物N 2和H 2 O,并且具有广泛的底物范围。
Amidines for Versatile Ruthenium(II)-Catalyzed Oxidative CH Activations with Internal Alkynes and Acrylates
作者:Jie Li、Michael John、Lutz Ackermann
DOI:10.1002/chem.201304944
日期:2014.4.25
Cationicruthenium complexes derived from KPF6 or AgOAc enabled efficient oxidative CH functionalizations on aryl and heteroaryl amidines. Thus, oxidative annulations of diversely decorated internal alkynes provided expedient access to 1‐aminoisoquinolines, while catalyzed CH activations with substituted acrylates gave rise to structurally novel 1‐iminoisoindolines. The powerful ruthenium(II) catalysts
Selective Synthesis of Isoquinolines by Rhodium(III)-Catalyzed C–H/N–H Functionalization with α-Substituted Ketones
作者:Jie Li、Zhao Zhang、Mengyao Tang、Xiaolei Zhang、Jian Jin
DOI:10.1021/acs.orglett.6b01916
日期:2016.8.5
A rhodium(III)-catalyzed C–H/N–H bond functionalization for the synthesis of 1-aminoisoquinolines from aryl amidines and α-MsO/TsO/Cl ketones was achieved under mild reaction conditions. Thus, this approach provides a practical method for the site-selective synthesis of various synthetically valuable isoquinolines with wide functional group tolerance.
Retro-ene reactions in heterocyclic synthesis.<b>IV</b>. A new synthetic method for 6-hydroxypyrimidin-4(3<i>H</i>)-ones and 1,3,5-triazine-2,4(1<i>H</i>,3<i>H</i>)-diones
作者:Kunio Ito、Shingo Miyajima
DOI:10.1002/jhet.5570360107
日期:1999.1
N-t-Butylbenzamidines 1 reacted with diphenyl phenylmalonate or diphenyl methylmalonate to give 6-hydroxypyrimidin-4(3H)-ones 4 or 5. Amidines 1 on reaction with diphenyl imidodicarboxylate afforded 1,3,5-triazine-2,4(1H, 3H)-diones 8.
N-吨-Butylbenzamidines 1与碳酸二苯苯基丙二或二苯基甲基丙反应,得到6-羟基嘧啶-4-(3 H ^) -酮4或5脒1上,得到与碳酸二苯imidodicarboxylate反应-1,3,5-三嗪-2,4( 1 H,3 H)-二酮8。
Retro-ene reactions in heterocyclic synthesis. v. a novel synthetic method for 1,3,5-triazine-2,4(1H,3H)-diones
作者:The Late Kunio Ito、Chiharu Sekiguchi、Asuka Wakai Hiroyuki Miida、Shogo Ihara
DOI:10.1002/jhet.5570440648
日期:2007.11
N-t-Butylamidines 1 on heating with diphenyl carbonate (2) at 150-180° gave the 1,3,5-triazine-2,4(1H,3H)-dione derivatives 5. Acylation of amidines 1 and cyclocondensation of the resulting carbamates 3 gave [1,3,5,7]tetrazocine-2,6-dione derivatives 4, and subsequent retro-enereaction and ring contraction afforded triazine derivatives 5.