C-H Bond Functionalization of Benzoxazoles with Chromium(0) Fischer Carbene Complexes was written by Hu, Fangdong;Yang, Jinghui;Xia, Ying;Ma, Chen;Xia, Haiping;Zhang, Yan;Wang, Jianbo. And the article was included in Organometallics in 2016.Electric Literature of C8H7NO2 This article mentions the following:
An efficient C-H bond functionalization of benzoxazoles with chromium(0) Fischer carbene complexes under catalyst-free conditions has been developed. A series of benzoxazoles and chromium(0) carbene complexes are compatible with the reaction. This transformation provides an alternative way for C-H bond alkylation of benzoxazoles. In the reaction mechanism the elimination of the Cr(CO)5 fragment seems more favored than the elimination of an alkoxy group, which is in sharp contrast to the previous reports on the reaction of organolithium reagents with chromium(0) Fischer carbene complexes. In the experiment, the researchers used many compounds, for example, 5-Methoxybenzo[d]oxazole (cas: 132227-03-3Electric Literature of C8H7NO2).
5-Methoxybenzo[d]oxazole (cas: 132227-03-3) belongs to benzoxazole derivatives. Although benzoxazole itself is of little practical value, many derivatives of benzoxazoles are commercially important. A number of marketed drugs are available having benzoxazole as core active moiety like, nonsteroidal anti-inflammatory drug (NSAID)—flunoxaprofen, benoxaprofen, antibiotic—calcimycin.Electric Literature of C8H7NO2
Referemce:
Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem