Willgerodt–Kindler reaction-driven one pot solventless entry to 2-oxazolines
作者:Shivani Bansal、Poonam Gupta、A. K. Halve
DOI:10.1080/10426507.2015.1135151
日期:2016.7.2
efficient and green protocol for the synthesis of 2-oxazolines by the reaction of aromatic nitriles with β-aminoalcohols using sulfur under solvent-free conditions. The reaction occurs via the Willgerodt–Kindler mechanism followed by transamidation and dehydrosulfuration. This methodology offers several advantages such as good yields, mild and practical reactionconditions, simple work-up procedure, and
Oxazoline is OK! A general and efficient method for the synthesis of oxazolines has been developed (see scheme). This allowed the preparation of 27 five‐membered‐ring heterocycles and 11 six‐membered‐ring heterocycles in moderate to good yields.
作者:Xuelin Yue、Yijie Gao、Junwei Huang、Yadong Feng、Xiuling Cui
DOI:10.1021/acs.orglett.3c01032
日期:2023.4.28
An efficient approach for the synthesis of N-substituted indenoisoquinolinones via rhodium(III)-catalyzed C–H bond activation/subsequent [4 + 2] cyclization starting from easily available 2-phenyloxazolines and 2-diazo-1,3-indandiones has been developed. A series of indeno[1,2-c]isoquinolinones were obtained in up to 93% yield through C–H functionalization, followed by intramolecular annulation, elimination