Benzaldehyde → 3-Bromobenzaldehyde

Participants

Reaction Steps

To 1,2-dichloroethane (1,2-dichloroethane: 143.8 g, 1-bromo-2-chloroethane: 60.5 g, 1,2-dibromoethane: 4.8 g) recovered from Example 2 was added fresh 1,2-dichloroethane (41.5 g), and 98% aluminum chloride (0.65 mol, 88.6 g) was mixed. Into this was blown chlorine (0.25 mol, 17.8 g) at °C., and 97% benzaldehyde (0.50 mol, 54.6 g) was added over 1 hour at 40° C. After bromine (0.30 mol, 48.0 g) was added dropwise to this mixture over 2 hours at 40° C., the resulting mixtures were stirred for 2 hours at that temperature. The post-treatment was carried out by the similar procedure to that in Example 1. As a result, 83.1 g of 3-bromobenzaldehyde were obtained.

Provenance & Evidence