In 2019,Chemical Communications (Cambridge, United Kingdom) included an article by Luo, Xuewei; Fan, Zhengning; Zhang, Bo; Chen, Chao; Xi, Chanjuan. Computed Properties of C33H24IrN3. The article was titled 《Visible-light-triggered direct keto-difluoroacetylation of styrenes with (fluorosulfonyl)difluoroacetate and dimethyl sulfoxide leading to α-difluoroacetylated ketones》. The information in the text is summarized as follows:
Photoredox-catalyzed direct keto-difluoroacetylation of styrenes with (fluorosulfonyl)difluoroacetate and DMSO as an oxidant is disclosed. A variety of α-difluoroacetylated ketones bearing functional groups with good yields are obtained using fac-Ir(ppy)3 as a photocatalyst under visible light irradiation In the experiment, the researchers used many compounds, for example, fac-Tris(2-phenylpyridine)iridium(cas: 94928-86-6Computed Properties of C33H24IrN3)
fac-Tris(2-phenylpyridine)iridium(cas: 94928-86-6) belongs to pyridine. Pyridine is very deactivated towards electrophilic substitution with respect to benzene. For this reason classical formylation, using methods such as the Gattermann or Vilsmeier reactions, are not generally successful. Computed Properties of C33H24IrN3