With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.40191-32-0,Tetrahydro-2H-pyran-4-carbonyl chloride,as a common compound, the synthetic route is as follows.
Intermediate 4 [(S)-1-(Tetrahydro-pyran-4-carbonyl)-pyrrolidin-3-yl]-carbamic acid tert-butyl ester To a vigorously stirring solution of tetrahydro-2H-pyran-4-carbonyl chloride (0.455 g, 3.06 mmol) in CH2Cl2 (10 mL) was added simultaneously portionwise sat. NaHCO3(aq) (10 mL) and a solution of the (S)-pyrrolidin-3-yl]-carbamic acid tert-butyl ester (570 mg, 3.06 mmol) at rt. The resulting biphasic mixture was stirred vigorously at rt for 3 h. The organic layer was separated by filtration through a phase separation tube, concentrated in vacuo and purified by flash chromatography on silica gel with CH2Cl2/MeOH to give [(S)-1-(tetrahydro-pyran-4-carbonyl)-pyrrolidin-3-yl]-carbamic acid tert-butyl ester as a colourless gum (0.623 g, 68% yield) LCMS: [M+H]+=299.6, Rt(7)=0.73 min.
40191-32-0, The synthetic route of 40191-32-0 has been constantly updated, and we look forward to future research findings.
Reference£º
Patent; NOVARTIS AG; COOKE, Nigel Graham; FERNANDES GOMES DOS SANTOS, Paulo Antonio; FURET, Pascal; HEBACH, Christina; HOGENAUER, Klemens; HOLLINGWORTH, Gregory; KALIS, Christoph; LEWIS, Ian; SMITH, Alexander Baxter; SOLDERMANN, Nicolas; STAUFFER, Frederic; STRANG, Ross; STOWASSER, Frank; TUFFILLI, Nicola; VON MATT, Anette; WOLF, Romain; ZECRI, Frederic; US2015/342951; (2015); A1;,
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