Hydrochloric Acid → 6-methyl-3-piperidin-4-yl-thieno[2,3-d]isoxazole Hydrochloride
反応式
C(OC([N:8]1[CH2:13][CH2:12][CH:11]([C:14]2[C:18]3[S:19][CH:20]=[C:21]([CH3:22])[C:17]=3[O:16][N:15]=2)[CH2:10][CH2:9]1)=O)(C)(C)C.[ClH:23]>CO>[ClH:23].[CH3:22][C:21]1[C:17]2[O:16][N:15]=[C:14]([CH:11]3[CH2:12][CH2:13][NH:8][CH2:9][CH2:10]3)[C:18]=2[S:19][CH:20]=1参加物
4
実験手順
Stir a solution of 4-(6-methyl-thieno[2,3-d]isoxazol-3-yl)-piperidine-1-carboxylic acid tert-butyl ester (8.84 mmol, 2.85 g, 1.00 equivalents) in hydrochloric acid (48.75 mL, 1 M solution in diethyl ether) and methanol (2.00 mL) at room temperature for 3.5 hours. Filter the suspension, collect the white solid and dry to yield the desired product (659 mg). Allow the mother liquor to age overnight, filter, collect the white solid and dry to yield additional desired product (1.252 g). LC/MS (ESI), m/e 223 (MH+), retention time 1.14 minutes. Condition II.