Dann, Otto et al. published their research in Justus Liebigs Annalen der Chemie in 1973 | CAS: 38220-75-6

1-(5-Bromobenzofuran-2-yl)ethanone (cas: 38220-75-6) belongs to benzofurans derivatives. Benzofurans are only weakly aromatic in nature and they are cleaved by many oxidative and reductive conditions. Substituted benzofurans find applications such as fluorescent sensors, oxidants, in drug discovery, and in another field of chemistry and agriculture.Reference of 38220-75-6

Trypanocidal diamidines with four rings in one or two ring systems was written by Dann, Otto;Volz, Gerda;Demant, Ekke;Pfeifer, Wolfgang;Bergen, Gerhard;Fick, Helmut;Walkenhorst, Ekkehard. And the article was included in Justus Liebigs Annalen der Chemie in 1973.Reference of 38220-75-6 This article mentions the following:

The amidinobenzothienoindole I [R = C(:N+H2)NH2 Cl-] was prepared by reaction of 3-acetoxy-5-bromobenzo-[b]thiophene with 3-BrC6H4NHNH2 and converting the resulting bromide I (R = Br) via the nitrile I (R = CN). The hexahydrochrysene II [R = C(:N+H2)NH2Cl-, X = H2] was prepared starting from its dioxo analog II (R = H, X = O) by nitration via the dinitro compound II (R = NO2, X = O) and appropriate conversions. Similarly prepared was the hexadehydro analog of II. The benzofuranylindoles III [R = C(:N+H2)NH2Cl-, x = 5 or 6] were prepared by reaction of 2-acetyl-5-bromobenzofuran with y-BrC6H4NHNH2 (y = 3 or 4), cyclization of the resulting hydrazone, and conversion of R = Br into R = C(:N+H2)NH2Cl-. The naphthylbenzothiophene IV [R = C(:N+H2)NH2Cl-] was prepared by ring closure of 3-RC6H4SCH2COX1Br (R = Me, X1 = 2,6-naphthylene) via IV (R = CN). Similarly, the naphthothiophene V was prepared by ring closure of BrX1SCH2COC6H4Br-4. The bis(benzofuranyl)methane VI [Z = CH2, X = X1 = O, R = C(:N+H2)NH2C1-, R1 = H] was prepared by reaction of 2-(2-bromoacetyl)-5-bromobenzofuran with 5,2-Br(HO)C6H3CHO and reduction of the keto groups. Wittig reaction led to the analogs VI (Z = CH:CH, CH:CMe, CH2CH2, or CH2CHMe; X, X1 = O or S; R1 = H or Me). The trypanocidal properties of the diamidines are impaired due to the rigidity of the skeleton and its enlargement. In the experiment, the researchers used many compounds, for example, 1-(5-Bromobenzofuran-2-yl)ethanone (cas: 38220-75-6Reference of 38220-75-6).

1-(5-Bromobenzofuran-2-yl)ethanone (cas: 38220-75-6) belongs to benzofurans derivatives. Benzofurans are only weakly aromatic in nature and they are cleaved by many oxidative and reductive conditions. Substituted benzofurans find applications such as fluorescent sensors, oxidants, in drug discovery, and in another field of chemistry and agriculture.Reference of 38220-75-6

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem