Solvent-Regulated Coupling of 2-Alkynylbenzaldehydes with Cyclic Amines: Selective Synthesis of Fused N-Heterocycles and Functionalized Naphthalene Derivatives
作者:Yan He、Zhi Zheng、Qimeng Liu、Xinying Zhang、Xuesen Fan
DOI:10.1021/acs.orglett.0c03442
日期:2020.11.20
synthesis of 1,2,3,4-tetrahydrobenzo[g]quinoline derivatives through PdCl2-catalyzed, TBHP-promoted, and toluene-mediated dehydrogenation/[4+2] cycloaddition of saturated cyclicamines with 2-alkynylbenzaldehydes was developed. On the contrary, when the reaction medium was changed from toluene to DMSO/H2O, another class of important compounds, naphthyl chain amines, formed via a dehydrogenation–intermolecular
通过PdCl 2催化,TBHP促进和甲苯介导的饱和环胺的脱氢/ [4 + 2]与2-炔基苯甲醛的环加成反应,成功合成了1,2,3,4-四氢苯并[ g ]喹啉衍生物。相反,当反应介质从甲苯变为DMSO / H 2 O时,通过脱氢-分子间缩合-C-N键裂解-分子间缩合途径形成的另一类重要化合物萘链胺选择性好。
Synthesis of 1,2-dihydroisoquinolin-1-ylphosphonates via three-component reactions of 2-(2-formylphenyl)ethanone, amine, and diethyl phosphite
作者:Shengqing Ye、Haibo Zhou、Jie Wu
DOI:10.1016/j.tet.2008.12.038
日期:2009.2
Synthesis of 1,2-dihydroisoquinolin-1-ylphosphonates via CuI-catalyzed three-component tandem reactions of 2-(2-formylphenyl)ethanone, amine, and diethyl phosphite is described. The reactions proceed smoothly under mild conditions leading to the desired products in good yields.
The selective oxidation of the two different benzylethereal position of 3-arylisochromans by dimethyldioxirane as a function of different substituents on the aromatic rings was studied. The easy oxidation of these compounds was exploited for a new easy access to substituted 3-arylisocoumarins. (C) 1999 Elsevier Science Ltd. All rights reserved.