Facile assembly of 1-(4-haloisoquinolin-1-yl)ureas via a reaction of 2-alkynylbenzaldoxime, carbodiimide, and halide in water
摘要:
1-(4-Haloisoquinolin-1-yl)ureas are generated efficiently via a tandem reaction of 2-allcynylbenzal doxime, carbodiimide, with halide in water. The process involves the generation of halonium ion in situ by employment of Nal/oxone or NaBr/oxone as the promoters. This green process proceeds smoothly and efficiently, accommodating a variety of substituents to generate the desired products. (c) 2014 Elsevier Ltd. All rights reserved.
An approach to 1-phosphorylated isoquinolines through silver(I)-catalyzed tandem reaction involving C–N and C–P bond formation
作者:Xianbo Wang、Zhiyong Wang
DOI:10.1016/j.tet.2014.06.060
日期:2014.9
A novel silver-catalyzed tandem reaction of 2-alkynylbenzaldoximes with H-phosphinate esters, and H-phosphine oxides has been developed, providing a general and powerful tool for the synthesis of various 1-phosphorylated isoquinolins in moderate to excellent yield. This reaction proceeded smoothly to construct C–N and C–P bonds in one-pot with good functional group tolerance under mild conditions.
A silver(I)-catalyzed reaction of 2-alkynylbenzaldoxime with arylsulfonyl chloride
作者:Jinming Yang、Qing Xiao、Jie Sheng、Jie Wu
DOI:10.1016/j.tet.2013.11.056
日期:2014.1
A silver-catalyzed reaction of 2-alkynylbenzaldoxime with arylsulfonyl chloride proceeds smoothly at room temperature to afford 4-tosyloxyisoquinolines in moderate to good yields. Additionally, the resulting 4-tosyloxyisoquinolines could be further elaborated through palladium-catalyzed coupling reactions leading to diverse isoquinolines.
1-(Isoquinolin-1-yl)urea Library Generation via Three-Component Reaction of 2-Alkynylbenzaldoxime, Carbodiimide, with Electrophile
作者:Shengqing Ye、Huanhuan Wang、Jie Wu
DOI:10.1021/co100026y
日期:2011.3.14
A novel and highly efficient three-component reaction of 2-alkynylbenzaldoxime, carbodiimide, with electrophile (bromine or iodinemonochloride) is disclosed, which generates 1-(4-haloisoquinolin-1-yl)ureas in good yields under mild conditions. Subsequent palladium-catalyzed Suzuki−Miyaura coupling reaction is introduced, leading to the diverse 1-(isoquinolin-1-yl)ureas.
Facile Synthesis of 1-(Isoquinolin-1-yl)ureas by Silver Triflate Catalyzed Tandem Reactions of 2-Alkynylbenzaldoximes with Carbodiimides
作者:Shengqing Ye、Huanhuan Wang、Jie Wu
DOI:10.1002/ejoc.201001040
日期:2010.11
2-Alkynylbenzaldoximes react with carbodiimides under mild conditions and silver triflate catalysis in DMF, leading to a diverse range of 1-(isoquinolin-1-yl)ureas in good to excellent yields. This transformation involves tandem 6-endo cyclization, [3+2] cycloaddition, and subsequent rearrangement.
Generation of 1-aroxyisoquinolines via a silver-catalyzed reaction of 2-alkynylbenzaldoxime with phenol in the presence of p -toluenesulfonyl chloride
作者:Qing Xiao、Danqing Zheng、Qiuping Ding、Jie Wu
DOI:10.1016/j.tet.2013.04.076
日期:2013.6
A silver-catalyzed reaction of 2-alkynylbenzaldoxime with phenol promoted by p-toluenesulfonyl chloride leads to 1-aroxyisoquinolines in good yields. The presence of p-toluenesulfonyl chloride as an activator is essential for the successful transformation.