Cesium carbonate → (S)-tert-butyl 3-(5-(4-(6-(1-tert-butoxy-2-ethoxy-2-oxoethyl)-7-(4-chlorophenyl)-5-methylbenzo[d]thiazol-2-yl)pyridin-2-yl)-1H-indazol-1-yl)azetidine-1-carboxylate

HRID 879352Notes

Reaction equation

HRID 879352 reaction equation
[NH:1]1[C:9]2[C:4](=[CH:5][C:6]([C:10]3[CH:15]=[C:14]([C:16]4[S:17][C:18]5[C:24]([C:25]6[CH:30]=[CH:29][C:28]([Cl:31])=[CH:27][CH:26]=6)=[C:23]([C@H:32]([O:38][C:39]([CH3:42])([CH3:41])[CH3:40])[C:33]([O:35][CH2:36][CH3:37])=[O:34])[C:22]([CH3:43])=[CH:21][C:19]=5[N:20]=4)[CH:13]=[CH:12][N:11]=3)=[CH:7][CH:8]=2)[CH:3]=[N:2]1.C([O-])([O-])=O.[Cs+].[Cs+].[C:50]([N:57]1[CH2:60][CH:59](I)[CH2:58]1)([O:52][C:53]([CH3:56])([CH3:55])[CH3:54])=[O:51]>CN(C=O)C>[C:39]([O:38][C@@H:32]([C:23]1[C:22]([CH3:43])=[CH:21][C:19]2[N:20]=[C:16]([C:14]3[CH:13]=[CH:12][N:11]=[C:10]([C:6]4[CH:5]=[C:4]5[C:9](=[CH:8][CH:7]=4)[N:1]([CH:59]4[CH2:58][N:57]([C:50]([O:52][C:53]([CH3:56])([CH3:55])[CH3:54])=[O:51])[CH2:60]4)[N:2]=[CH:3]5)[CH:15]=3)[S:17][C:18]=2[C:24]=1[C:25]1[CH:26]=[CH:27][C:28]([Cl:31])=[CH:29][CH:30]=1)[C:33]([O:35][CH2:36][CH3:37])=[O:34])([CH3:42])([CH3:41])[CH3:40]

Participants

5

Reactant 3

HCID 10796Cesium carbonateHCID 11000522Tert-butyl 3-iodoazetidine-1-carboxylateHCID 86700148(S)-ethyl 2-(2-(2-(1H-indazol-5-yl)pyridin-4-yl)-7-(4-chlorophenyl)-5-methylbenzo[d]thiazol-6-yl)-2-tert-butoxyacetate

Product 1

HCID 86700152(S)-tert-butyl 3-(5-(4-(6-(1-tert-butoxy-2-ethoxy-2-oxoethyl)-7-(4-chlorophenyl)-5-methylbenzo[d]thiazol-2-yl)pyridin-2-yl)-1H-indazol-1-yl)azetidine-1-carboxylate

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
60 °C

Procedure

To a solution of (S)-ethyl 2-(2-(2-(1H-indazol-5-yl)pyridin-4-yl)-7-(4-chlorophenyl)-5-methylbenzo[d]thiazol-6-yl)-2-tert-butoxyacetate (110 mg, 0.18 mmol) in DMF (3 mL) was added Cs2CO3 (117 mg, 0.36 mmol) and 1-Boc-3-iodoazetidine (76 mg, 0.27 mmol). The reaction mixture was heated at 60° C. overnight. The reaction mixture was washed by saturated NaHCO3, extracted by EtOAc, the organic phase was dried over MgSO4, filtered, concentrated down, purified by silica gel column, eluting by 0-60% EtOAc in hexanes to give the product. LCMS-ESI+: calc'd for C42H44ClN5O5S: 766.3 (M+H+); found: 766.3.

Workup

  1. washThe reaction mixture was washed by saturated NaHCO3
  2. extractionextracted by EtOAc
  3. dry with materialthe organic phase was dried over MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated down
  6. custompurified by silica gel column
  7. washeluting by 0-60% EtOAc in hexanes
  8. customto give the product

Sources & evidence

ORD record
ord-0f395328df1448629f425148e8d06308
Source dataset
uspto-grants-2015_03
Patent number
US08987250B2

Reaction notes

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