DOI: 10.1039/d6ra04461a ISSN: 2046-2069
Synthesis of 6,7-dihydrobenzo[ d ]oxazol-4(5 H )-ones through cascade N–H insertion and intramolecular annulation of cyclic 2-diazo-1,3-diketones with amide
Chao Liu, Guang Han, Feng Gao, Xinyu Tong, Zi Wang, Wangcheng Hu, Xinwei HeA one-pot two-step protocol has been reported for the synthesis of 6,7-dihydrobenzo[ d ]oxazol-4(5 H )-ones through the N–H insertion of Rh-carbene and the subsequent intramolecular annulation of cyclic 2-diazo-1,3-diketones with amides.