Hydrochloric Acid → 4-Hydroxy-4-(2-isopropylthiazol-5-yl)cyclohexanone

反応式

[CH:1]([C:4]1[S:5][C:6]([C:9]2([OH:19])[CH2:18][CH2:17][C:12]3(OCC[O:13]3)[CH2:11][CH2:10]2)=[CH:7][N:8]=1)([CH3:3])[CH3:2].Cl.C([O-])([O-])=O.[Na+].[Na+]>C1COCC1>[OH:19][C:9]1([C:6]2[S:5][C:4]([CH:1]([CH3:3])[CH3:2])=[N:8][CH:7]=2)[CH2:18][CH2:17][C:12](=[O:13])[CH2:11][CH2:10]1

参加物

実験手順

A solution of 8-(2-isopropyl-1,3-thiazol-5-yl)-1,4-dioxaspiro[4.5]decan-8-ol (0.714 g, 2.52 mmol) in 15 mL of THF/N HCl (1:1) was stirred overnight at room temperature. The mixture was treated with Na2CO3 to PH 8 and extracted with EtOAc (3×). The combined organic layers were washed with saturated NaCl solution, dried (MgSO4), and concentrated to give 0.65 g of 4-hydroxy-4-(2-isopropyl-1,3-thiazol-5-yl)cyclohexanone in 98% yield. MS (EI) calcd: (M+H)+=240.1; found: 240.0.