Cobalt(II)-Catalyzed Isocyanide Insertion Reaction with Sulfonyl Azides in Alcohols: Synthesis of Sulfonyl Isoureas
作者:Tian Jiang、Zheng-Yang Gu、Ling Yin、Shun-Yi Wang、Shun-Jun Ji
DOI:10.1021/acs.joc.7b01127
日期:2017.8.4
A Co(II)-catalyzed isocyanide insertion reaction with sulfonyl azides in alcohols to form sulfonyl isoureas via nitrene intermediate has been developed. This protocol provides a new, environmentally friendly, and simple strategy for the synthesis of sulfonyl isoureaderivatives by employing a range of substrates under mild conditions.
TiCl4-Mediated Synthesis of 3,4-Hetero-Disubstituted Isocoumarins by Means of Isocyanide Insertion Reactions
作者:Laurent El Kaïm、Laurence Grimaud、Maxime Vitale、Sudipta Ponra、Aude Nyadanu、Sylvie Maurin
DOI:10.1055/s-0036-1591733
日期:2018.3
Abstract The isocyanideinsertion into sulfanyl-phthalides under Lewis acid conditions is reported with full details. This sequential three-component reaction affords a new straightforward and highly convenient method for the preparation of 3-amino-4-sulfanyl isocoumarins, the potential of which is still unexplored. The isocyanideinsertion into sulfanyl-phthalides under Lewis acid conditions is reported
Selective Oxidative Coupling Reaction of Isocyanides Using Peroxide as Switchable Alkylating and Alkoxylating Reagent
作者:Xinglu Zhang、Zhiqiang Liu、Yu Gao、Feng Li、Yaming Tian、Chunju Li、Xueshun Jia、Jian Li
DOI:10.1002/adsc.201700953
日期:2018.1.17
A switchable oxidativecoupling reaction of isocyanide and peroxide has been disclosed. In the presence of iron catalyst, the coupling reaction affords N‐arylacetamides in good yields. By simply replacing the iron with copper catalyst, another different coupling reaction takes place in which peroxide can serve as alkoxylating source. This protocol represents a new fundamental coupling of two basic
Divergent synthesis of α-functionalized amides through selective N–O/C–C or N–O/C–C/C–N cleavage of aza-cyclobutanone oxime esters
作者:Hua-Wei Liu、Dian-Liang Wang、Nan-Quan Jiang、Hai-Yan Li、Zhong-Jian Cai、Shun-Jun Ji
DOI:10.1039/d1cc03348d
日期:——
Herein, a novel sequential ring opening reaction of aza-cyclobutanone oxime esters with isocyanides is described. The reaction proceeded smoothly under redox-neutral and mild conditions, leading to a divergent synthesis of α-cyanomethylaminoamides, α-acyloxyamides and α-acylaminoamides. In these transformations, a selective N–O/C–C or N–O/C–C/C–N cleavage was achieved only by changing the iron-catalyst
A New Focused Microwave Approach to the Synthesis of Amino-Substituted Pyrroloisoquinolines and Pyrroloquinolines via a Sequential Multi-Component Coupling Process
作者:Steven Ley、Mark Hopkin、Ian Baxendale
DOI:10.1055/s-2008-1067048
日期:2008.6
A multi-component reaction has been developed allowing direct access to pyrroloisoquinolines and pyrroloquinolines with new, electron-rich substitution patterns. The synthesised amino-substituted heterocyclic compounds and intermediates involved in their formation represent novel compounds. Focused microwave irradiation was used extensively to allow simple access to a wide temperature range using low boiling point solvents.