Some common heterocyclic compound, 25017-13-4, name is 1-(2-Bromoethyl)-3-fluorobenzene, molecular formula is C8H8BrF, 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. 25017-13-4
Example 37; 2-[2-(3-Fluorophenyl)ethyl]-5-phenyl-4-[(4-phenylbutyl)amino]isothiazol-3(2H)-one 1,1- dioxide 2-?ert-Butyl-5-phenyl-4-[(4-phenylbutyl)amino]isothiazol-3(2H)-one 1,1-dioxide (Example 1) (0.150g, 0.36mmol) was dissolved in TFA (3 ml) and heated in a microwave reactor at 1200C for 20 mins. The solvent was evaporated and the crude product was reevaporated from DCM (2×5 ml). The crude product, potassium carbonate (0.251g, 1.82mmol) and 3- fluorophenethylbromide (0.22 Ig, 1.09mmol) was dissolved in dry MeCN (3 ml) and heated at in a microwave reactor 1400C for 10 mins. The reaction mixture was purified by silica gel column chromatography using a 85: 15 mixture of heptane and EtOAc as eluant, to give the title compound (0.113g, 65%). 1H NMR (500 MHz, CDCl3): delta 7.55-7.41 (m, 5H), 7.34-7.25 (m, 3H), 7.23-7.17 (m, IH), 7.14-7.01 (m, 4H), 7.00-6.93 (m, IH), 5.28-5.19 (m, IH), 3.98- 3.90 (m, 2H), 3.18-3.10 (m, 2H), 2.91-2.83 (m, 2H), 2.50-2.43 (m, 2H), 1.44-1.36 (m, 4H); EPO
The chemical industry reduces the impact on the environment during synthesis 1-(2-Bromoethyl)-3-fluorobenzene. I believe this compound will play a more active role in future production and life.
Reference:
Patent; ASTRAZENECA AB; WO2006/73366; (2006); A1;,
Bromide – Wikipedia,
bromide – Wiktionary