Iron-Catalyzed C3-Formylation of Indoles with Formaldehyde and Aqueous Ammonia under Air was written by Wang, Qing-Dong;Zhou, Bin;Yang, Jin-Ming;Fang, Dong;Ren, Jiangmeng;Zeng, Bu-Bing. And the article was included in Synlett in 2017.Recommanded Product: 4769-96-4 This article mentions the following:
An efficient iron-catalyzed C3-selective formylation of free (N-H) or N-substituted indoles such as 2-phenyl-1H-indole, 6-fluoro-1H-indole, 1-methyl-1H-indole, etc. was developed by employing formaldehyde and aqueous ammonia, with air as the oxidant. This new method gave 3-formylindoles such as 2-phenyl-1H-indole-3-carbaldehyde, 6-fluoro-1H-indole-3-carbaldehyde, 1-methyl-1H-indole-3-carbaldehyde, etc. in moderate to excellent yields with fairly short reaction times. Moreover, this procedure for catalytic formylation of indoles can be applied to gram-scale syntheses. In the experiment, the researchers used many compounds, for example, 6-Nitro-1H-indole (cas: 4769-96-4Recommanded Product: 4769-96-4).
6-Nitro-1H-indole (cas: 4769-96-4) belongs to indole derivatives. Indole could be stereoselectively alkylated with chiral cyclopentyl sulfone reagent. More than 200 indole derivatives have already been marketed as drugs or are under advanced stages of clinical trials.Recommanded Product: 4769-96-4
Referemce:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles