Synthetic Route of 4333-56-6, A common heterocyclic compound, 4333-56-6, name is Bromocyclopropane, molecular formula is C3H5Br, its 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.
To a stirred solution of 2-bromo-5-fluorophenol (1.0 g) in DMF (15 mL) in a microwave tube was added cesium carbonate (5.0 g), potassium iodide (130 mg) and bromocyclopropane (1.82 g). The mixture was heated in a microwave oven to 180 C for 1 h, to 200 C for 1 h and to 220 C for 1 h. Ethyl acetate was added and the mixture was washed with water. The organic phase was washed with saturated sodium chloride solution, dried (sodium sulfate) and the solvent was removed in vacuum. Silica gel chromatography gave 1.14 g of the title compound. 1H-NMR (300MHz, DMSO-d6): delta [ppm]= 0.62 – 0.88 (m, 4H), 3.90 – 4.00 (m, 1 H), 6.77 (td, 1 H), 7.23 (dd, 1 H), 7.48 – 7.63 (m, 1 H).
The synthetic route of 4333-56-6 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; BAYER INTELLECTUAL PROPERTY GMBH; BAYER PHARMA AKTIENGESELLSCHAFT; SCHULZE, Volker; KOSEMUND, Dirk; WENGNER, Antje Margret; SIEMEISTER, Gerhard; STOeCKIGT, Detlef; BRUENING, Michael; WO2013/87579; (2013); A1;,
Bromide – Wikipedia,
bromide – Wiktionary