Related Products of 134604-07-2,Some common heterocyclic compound, 134604-07-2, name is 1-Cyano-2-bromo-5-nitrobenzene, molecular formula is C7H3BrN2O2, traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.
A suspension of 2-chloro-5-(2,2-dichloro-3-(3,5-dichlorophenyl)cyclopropa ne-1-carboxamido)benzamide (C340) (600 mg, 1.326 mmol), 2-bromo-5-nitrobenzonitrile (361 mg, 1.591 mmol), cesium carbonate (605 mg, 1.856 mmol), tris(dibenzyideneacetone)dipaladium(0) ( Pd2(dba)s, 36.4 mg, 0.040 mmol), and bis(diphenylphosphino)-9,9-dimethylxa nthene (Xantphos, 69.0 mg, 0.119 mmol) in 1,4- dioxane (8.9 ml.) was evacuated under vacuum and backfilled with nitrogen three times. The reaction mixture was sealed under a blanket of nitrogen and heated to 60 C by microwave irradiation for 2 hours. The reaction mixture was diluted with ethyl acetate and filtered through Celite ” . The solvent was removed via rotary evaporation to give a deep red solid . The solid was suspended in dichloromethane ( 10 mL) and then collected by vacuum filtration, washing with more dichloromethane to afford the title compound as a red solid (0.598 g, 75% ) : N M R (400 MHz, Acetone- e) missing one amide NH in baseline delta 10.26 (s, 1H), 8.73 (d, J = 2.6 Hz, 1H), 8.62 (dd, J = 9.2, 2.6 Hz, 1 H), 8.55 (d, J = 9.2 Hz, 1H), 8. 13 (d, J = 2.6 Hz, 1H), 7.89 (dd, J = 8.8, 2.6 Hz, 1 H), 7.55 (d, J = 8.8 Hz, 1H), 7.51 (s, 3H), 3.67 (d, J = 8.3 Hz, 1H), 3.45 (d, J = 8.3 Hz, 1H); HRMS- ESI (m/z) [M + H]+ calcd for C24H 14G5N4O4, 596.9452 ; found, 596.9441 ; IR (thin film) 3341, 3074, 1673, 1568, 1545, 1509, 1473, 1413 cm 1.
These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 1-Cyano-2-bromo-5-nitrobenzene, its application will become more common.
Reference:
Patent; DOW AGROSCIENCES LLC; HEEMSTRA, Ronald J.; ROSS, Ronald; DEKORVER, Kyle A.; GRAY, Kaitlyn; KNUEPPEL, Daniel I.; VEDNOR, Peter; MARTIN, Timothy P.; ECKELBARGER, Joseph D.; DAEUBLE, John F.; HUNTER, Ricky; DEMETER, David A.; TRULLINGER, Tony K.; BAUM, Erich W.; BENKO, Zoltan L.; CHOY, Nakyen; CROUSE, Gary D.; LI, Fangzheng; NISSEN, Jeffrey; OLSON, Monica B.; RIENER, Michelle; SPARKS, Thomas C.; WESSELS, Frank J.; YAP, Maurice C.; (981 pag.)WO2016/168059; (2016); A1;,
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