Hydrochloric Acid → HCID 14478919, compound

Participants

Reaction Steps

In a carefully dried Pyrex reaction vessel were combined 10 g of 2,3-dimethyl-6-acetamidobenzonitrile, 300 ml of CCl4, and 200 ml of HCl-free CHCl3 under argon. To this solution was added 10.8 g of N-bromosuccinimide (recrystallized from H2O) and 0.5 g of azo bisisobutyronitrile (AIBN). The reaction was heated to reflux and irradiated with an external General Electric sunlamp. The initially yellow reaction turned red-brown after 1 h when an additional 0.5 g of AIBN was added. After another 2 h, the reaction mixture was poured into H2O, separated, and the aqueous layer reextracted with CHCl3. The combined CHCl3 layers were washed with H2O, saturated NaHCO3 solution, and brine. The dried organic solution was evaporated at reduced pressure and the residue was crystallized from ethyl acetate to yield 6 g (42%) of the title compound, m.p. 152°-153° C. NMR (CDCl3) 2.30 (3H, s, CH3CON), 2.60 (3H, s, CH3), 4.50 (2H, s, --CH2Br), 7.40 (1H, d, ArH), 8.10 (1H, d, ArH), Anal. Calc'd for C11H11BrN2O: C, 49.5; H, 4.15; N, 10.5. Found: C, 50.3, H, 4.31; N, 10.6.

Provenance & Evidence