Sodium Hydroxide → (S)-2-tert-butoxy-2-(7-(4-chlorophenyl)-2-(5'-methoxy-2,3'-bipyridin-4-yl)-5-methylbenzo[d]thiazol-6-yl)ethanol

HRID 879283Notes

Reaction equation

C([O:7][CH2:8][C@@H:9]([O:41][C:42]([CH3:45])([CH3:44])[CH3:43])[C:10]1[C:32]([CH3:33])=[CH:31][C:13]2[N:14]=[C:15]([C:17]3[CH:22]=[CH:21][N:20]=[C:19]([C:23]4[CH:24]=[N:25][CH:26]=[C:27]([O:29][CH3:30])[CH:28]=4)[CH:18]=3)[S:16][C:12]=2[C:11]=1[C:34]1[CH:39]=[CH:38][C:37]([Cl:40])=[CH:36][CH:35]=1)(=O)C(C)(C)C.[OH-].[Na+]>C1COCC1.CO>[C:42]([O:41][C@@H:9]([C:10]1[C:32]([CH3:33])=[CH:31][C:13]2[N:14]=[C:15]([C:17]3[CH:22]=[CH:21][N:20]=[C:19]([C:23]4[CH:24]=[N:25][CH:26]=[C:27]([O:29][CH3:30])[CH:28]=4)[CH:18]=3)[S:16][C:12]=2[C:11]=1[C:34]1[CH:39]=[CH:38][C:37]([Cl:40])=[CH:36][CH:35]=1)[CH2:8][OH:7])([CH3:45])([CH3:43])[CH3:44]

Participants

Conditions

Temperature: 40 °C

Procedure

To a solution of (S)-2-tert-butoxy-2-(7-(4-chlorophenyl)-2-(5′-methoxy-2,3′-bipyridin-4-yl)-5-methylbenzo[d]thiazol-6-yl)ethyl pivalate (40.5 mg, 0.063 mmol) in THF (0.5 mL) and methanol (0.5 mL) was added NaOH (0.5 mL, 2N solution). The reaction mixture was heated at 40° C. for 4 h, cooled, diluted with satd. aqueous NH4Cl, and extracted with ethyl acetate. The organic layer was dried over Na2SO4, filtered and concentrated to give the crude product which was used without further purification. LCMS-ESI+: calc'd for C31H31ClN3O3S: 560.2 (M+H+); Found: 560.0 (M+H+).

Workup

temperaturecooled
additiondiluted with satd
extractionaqueous NH4Cl, and extracted with ethyl acetate
dry with materialThe organic layer was dried over Na2SO4
filtrationfiltered
concentrationconcentrated

Sources & evidence

ORD record: ord-9e61034d0c8b4c1790a4bd00ee04d6e4
Source dataset: uspto-grants-2015_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08987250B2

Reaction notes

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