With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.76176-87-9,Thiomorpholine-1-oxide hydrochloride,as a common compound, the synthetic route is as follows.,76176-87-9
Intermediate 7 (17.86 g, 44.7 mmol), 1-oxide thiomorpholine hydrochloride (10.5 g, 67.1 mmol, 1.5 eq) and NaOAc (5.87 g, 71.5 mmol, 1.6 eq) weresuspended in anhydrous CH2CI2 (450 mL) under Ar(g). The reaction mixture was then refluxed for 6 h, then cooled down to rt and NaBH(OAc)3 (16.1 g, 76 mmol, 1 .7 eq) was slowly added over 15 mins. The mixture was left to stir at rt for 18 h. The mixture was then re-charged with 1-oxide thiomorpholine hydrochloride (10.5 g, 67.1 mmol, 1.5 eq), NaOAc (5.87 g, 71.5 mmol, 1.6 eq) andNaBH(OAc)3 (16.1 g, 76 mmol, 1.7 eq). After 6 h stirring, the mixture was quenched with H20 (300 mL) and extracted with CH2CI2 (2 x 300 mL). The combined organic extracts were washed with 50% brine (50 mL) then dried over MgSO4 and the solvent was removed in vacuo. Pd-scavenge was carried out in CH2CI2/MeOH (1:1, 100 mL) using MP-TMT resin (18 g, 0.68 mmol/g) over 18 h.The next day, the resin was filtered off, washed with CH2CI2/MeOH (1:1, 20 mL) and the solvent was removed in vacuo. Purification by silica gel column chromatography with EtOAc/MeOH (1:0-4:1) followed by CH2CI2/MeOH (1:0-9:1) yielded Example B as an off-white solid (13.0 g, 58%).1H NMR (300MHz, DMSO-d5) oH. 11.27 (brs, 1H), 8.62 (d, J=3.2 Hz, 2H), 8.18(d, J=7.5 Hz, 1H), 7.44-7.59 (m, 3H), 7.23 (t, J=7.7 Hz, 1H), 4.13 (d, J=4.7 Hz,4H), 3.84-3.93 (m, 4H), 3.83 (5, 2H), 2.84-3.03 (m, 4H), 2.64-2.83 (m, 4H). MS (ESj 503.0 (100%, [M+H]j.
The synthetic route of 76176-87-9 has been constantly updated, and we look forward to future research findings.
Reference£º
Patent; KARUS THERAPEUTICS LTD; SHUTTLEWORTH, Stephen Joseph; SILVA, Franck Alexandre; CECIL, Alexander Richard Liam; ALEXANDER, Rikki Peter; GATLAND, Alice Elizabeth; FINNEMORE, Daniel John; (123 pag.)WO2017/29521; (2017); A1;,
Thiomorpholine – Wikipedia
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