Adding a certain compound to certain chemical reactions, such as: 38573-88-5, name is 1-Bromo-2,3-difluorobenzene, belongs to bromides-buliding-blocks compound, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound 38573-88-5, Computed Properties of C6H3BrF2
EXAMPLE 93 (R,S)-3-[4-(2,3-difluorophenyl)piperazin-1-yl]-2-[(R,S)-(2-methoxyphenyl)(1-naphthyl)methyl]-2-methyl-3-oxopropanenitrile (RR,SS)-3-(2-methoxyphenyl)-2-methyl-3-(1-naphthyl)-2-(piperazin-1-ylcarbonyl)propanenitrile (471 mg, 1.14 mmol), 2,3-difluorobromobenzene (200 mg, 1.04 mmol), sodium tert-butoxide (139 mg, 1.45 mmol), tris(dibenzylideneacetone)dipalladium (0) (28 mg, 0.031 mmol), racemic BINAP (39 mg, 0.062 mmol), and toluene (3 mL) were combined in a Carius tube, vacuum degassed, placed under an argon atmosphere, sealed and heated to 80¡ã C. overnight. The reaction was cooled, taken up in diethyl ether, filtered, washed with water, saturated aqueous sodium bicarbonate, brine, dried over MgSO4, filtered, evaporated, and purified on slica gel (10percent hexanes/CH2Cl2) to yield 280 mg of the title compound as an off-white crystal solid. mp 198-200¡ã C.; 1H NMR 500 MHz (DMSO-D6): delta 7.98 (d, 1H, J=7.33 Hz), 7.86 (m, 2H), 7.79 (d, 1H, J=8.25 Hz), 7.54 (t, 1H, J=7.64 Hz), 7.42 (m, 2H), 7.23 (t, 1H, J=7.64 Hz), 7.12 (m, 2H), 7.08 (m, 1H), 7.00 (q, 1H, J=9.01 Hz), 6.79 (m, 2H), 6.01 (s, 1H), 4.01 (s, 3H), 3.73 (bs, 4H), 2.96 (bs, 4H), 1.64 (s, 3H) MS (ESI) m/z 526 ([M+H]+); Anal. calcd for C32H29F2N3O2.0.20H2O: C, 72.63; H, 5.60; N, 7.94. Found: C, 72.65; H, 5.58; N, 7.79.
If you are interested in these compounds, you can also browse my other articles.Thank you for taking the time to read this article. I hope you enjoyed it.
Reference:
Patent; Wyeth; US2005/256132; (2005); A1;,
Bromide – Wikipedia,
bromide – Wiktionary