Pyridine → 2-(2-(Tert-butyldimethylsilyloxy)-2-methylpropyl)-4-(5-chloro-2-methoxyphenyl)thiazol-5-amine

HRID 1466670Notes

Reaction equation

[NH2:1][C:2](=O)[CH:3]([NH:13][C:14](=O)[CH2:15][C:16]([O:19][Si:20]([C:23]([CH3:26])([CH3:25])[CH3:24])([CH3:22])[CH3:21])([CH3:18])[CH3:17])[C:4]1[CH:9]=[C:8]([Cl:10])[CH:7]=[CH:6][C:5]=1[O:11][CH3:12].COC1C=CC(P2(SP(C3C=CC(OC)=CC=3)(=S)S2)=[S:38])=CC=1.N1C=CC=CC=1>C(Cl)Cl>[Si:20]([O:19][C:16]([CH3:18])([CH3:17])[CH2:15][C:14]1[S:38][C:2]([NH2:1])=[C:3]([C:4]2[CH:9]=[C:8]([Cl:10])[CH:7]=[CH:6][C:5]=2[O:11][CH3:12])[N:13]=1)([C:23]([CH3:26])([CH3:25])[CH3:24])([CH3:22])[CH3:21]

Participants

Conditions

Temperature: 95 °C

Procedure

A mixture of N-(2-amino-1-(5-chloro-2-methoxyphenyl)-2-oxoethyl)-3-(tert-butyldimethylsilyloxy)-3-methylbutanamide (327 mg, 0.76 mmol), Lawesson's reagent (308 mg, 0.76 mmol) and pyridine (2.5 mL) was heated to 95° C. for 18 hours. DCM was added, the organics washed with sodium hydrogen carbonate (sat. aq.) and brine, then evaporated to dryness. The residues were purified by flash chromatography on silica gel (DCM) to afford 107 mg (33%) of 2-(2-(tert-butyldimethylsilyloxy)-2-methylpropyl)-4-(5-chloro-2-methoxyphenyl)thiazol-5-amine LCMS (ESI) m+H=427.3.

Workup

washthe organics washed with sodium hydrogen carbonate (sat. aq.) and brine
customevaporated to dryness
customThe residues were purified by flash chromatography on silica gel (DCM)

Sources & evidence

ORD record: ord-51ec62992efe4bf8990a0905523c86df
Source dataset: uspto-grants-2015_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08999998B2

Reaction notes

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