Tetrahydrofuran → (S)-2-(2-(3-amino-1-methyl-1H-indazol-6-yl)-7-(4-chlorophenyl)-5-methylbenzo[d]thiazol-6-yl)-2-tert-butoxyacetic acid

HRID 879490Notes

Reaction equation

HRID 879490 reaction equation
[NH2:1][C:2]1[C:10]2[C:5](=[CH:6][C:7]([C:11]3[S:12][C:13]4[C:19]([C:20]5[CH:25]=[CH:24][C:23]([Cl:26])=[CH:22][CH:21]=5)=[C:18]([C@H:27]([O:33][C:34]([CH3:37])([CH3:36])[CH3:35])[C:28]([O:30]CC)=[O:29])[C:17]([CH3:38])=[CH:16][C:14]=4[N:15]=3)=[CH:8][CH:9]=2)[N:4]([CH3:39])[N:3]=1.C1COCC1.[OH-].[Na+]>CCO>[NH2:1][C:2]1[C:10]2[C:5](=[CH:6][C:7]([C:11]3[S:12][C:13]4[C:19]([C:20]5[CH:21]=[CH:22][C:23]([Cl:26])=[CH:24][CH:25]=5)=[C:18]([C@H:27]([O:33][C:34]([CH3:35])([CH3:36])[CH3:37])[C:28]([OH:30])=[O:29])[C:17]([CH3:38])=[CH:16][C:14]=4[N:15]=3)=[CH:8][CH:9]=2)[N:4]([CH3:39])[N:3]=1

Participants

5

Reactant 3

HCID 8028TetrahydrofuranHCID 14798Sodium HydroxideHCID 86700305(S)-ethyl 2-(2-(3-amino-1-methyl-1H-indazol-6-yl)-7-(4-chlorophenyl)-5-methylbenzo[d]thiazol-6-yl)-2-tert-butoxyacetate

Product 1

HCID 86700306(S)-2-(2-(3-amino-1-methyl-1H-indazol-6-yl)-7-(4-chlorophenyl)-5-methylbenzo[d]thiazol-6-yl)-2-tert-butoxyacetic acid

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Conditions

Temperature
100 °C

Procedure

A vial was charged with (S)-ethyl 2-(2-(3-amino-1-methyl-1H-indazol-6-yl)-7-(4-chlorophenyl)-5-methylbenzo[d]thiazol-6-yl)-2-tert-butoxyacetate (60 mg), THF (1.5 mL), EtOH (absolute, 1 mL), and 2M aq NaOH (1 mL). The vessel was sealed and heated to 100° C. for 2 h. The reaction was cooled to 23° C., and filtered (0.45 micron teflon syringe filter). The filtrate was purified by reverse phase HPLC, eluting by 5-100% acetonitrile in H2O with 0.1% TFA to give the desired product. LCMS-ESI+: calc'd for C28H27ClN4O3S: 535.2, 537.2 (M+H+); Found: 535.2, 537.2 (M+H+). 1H NMR (400 MHz, CD3OD): δ 8.06 (s, 1H), 7.87 (s, 1H), 7.82 (d, J=8.5 Hz, 1H), 7.78-7.65 (m, 2H), 7.64-7.54 (m, 3H), 5.27 (s, 1H), 3.90 (s, 3H), 2.63 (s, 3H), 0.98 (s, 9H).

Workup

  1. customThe vessel was sealed
  2. temperatureThe reaction was cooled to 23° C.
  3. filtrationfiltered
  4. filtration(0.45 micron teflon syringe filter)
  5. customThe filtrate was purified by reverse phase HPLC
  6. washeluting by 5-100% acetonitrile in H2O with 0.1% TFA

Sources & evidence

ORD record
ord-94cf16774d404f11b566028a36b997af
Source dataset
uspto-grants-2015_03
Patent number
US08987250B2

Reaction notes

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