Preparation method of (R)-2-(9-(pyridin-2-yl)-6-dioxaspiro[4.5]decan-9-yl)acetonitrile_Kain Industrial Additive

Background and overview[1] (R)-2-(9-(pyridin-2-yl)-6-dioxaspiro[4.5]decan-9-yl)acetonitrile is a pharmaceutical intermediate that can be synthesized from but-3-ene -l-alcohol and cyclopentanone are used as starting materials and are prepared through a six-step reaction. Preparation[1] Preparation of 1,6-oxaspiro[4.5]dec-9-ol (C) To a solution of but-3-en-l-ol (100 g, 1.38 mol) was added cyclopentanone (232 g, 2.77 mol) in dichloromethane (DCM) (1,200 mL).…

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