Thiomorpholine-1-oxide hydrochloride, A common heterocyclic compound, 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., 76176-87-9
Example 1.048-[l-(3,5-difluorophenyl)pyrrolidin-2-yl]-2-morpholino-6-[(l-oxidothiomorpholin-4- yl)carbonyl] -4H-chromen-4-oTBTU (176 mg, 0.55 mmol) was added in one portion to a stirred solution of 8-(l-(3,5- difluorophenyl)pyrrolidin-2-yl)-2-morpholino-4-oxo-4H-chromene-6-carboxylic acid (125 mg, 0.27 mmol) and DIPEA (0.286 mL, 1.64 mmol) at room temperature and stirred for 2.5 h. Thiomorpholine 1 -oxide hydrochloride (85 mg, 0.55 mmol) was added to the reaction mixture and stirring was continued for 3 h. The reaction mixture was diluted with DCM, washed with water, brine, dried over MgSC^ and concentrated. The residue was purified by preparative HPLC. The fractions were evaporated to dryness, the residue was dissolved in DCM, dried over MgSC^ and concentrated. The remaining solid was triturated with diethyl ether, filtered, washed with diethyl ether and dried under vacuum at 50C to afford 8-[l-(3,5-difluorophenyl)pyrrolidin-2-yl]-2-morpholino-6-(l-oxo-l,4- thiazinane-4-carbonyl)chromen-4-one (87 mg, 57%) as a pale beige solid.Mass Spectrum: m/z [M+H]+ = 558.Proton NMR Spectrum : (DMSO-d6) 1.75-1.86 (m, 1H), 1.98-2.08 (m, 2H), 2.14 (bs, 0.5H), 2.51-2.58 (m partially hidden by DMSO-d5, 1H), 2.64 (bs, 1H), 2.81 (bs, 1.5H), 2.98 (bs, 1H), 3.27 (bs, 1H), 3.40 (bs, 1H), 3.49-3.65 (m, 5H), 3.64-3.83 (m, 6H), 4.21 (bs, 0.5H), 4.34 (bs, 0.5H), 5.25 (d, 1H), 5.62 (s, 1H), 6.13 (d, 2H), 6.34 (t, 1H), 7.18 (s, 1H), 7.87 (d, 1H)
The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. 76176-87-9. We look forward to the emergence of more reaction modes in the future.
Reference£º
Patent; ASTRAZENECA AB; ASTRAZENECA UK LIMITED; BARLAAM, Bernard, Christophe; DEGORCE, Sebastien Louis; LAMBERT-VAN DER BREMPT, Christine Marie Paul; LOHMANN, Jean-Jacques Marcel; PLE, Patrick; WO2012/140419; (2012); A1;,
Thiomorpholine – Wikipedia
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