Cesium carbonate → 2-((1-((2-((3aR,7aR)-2,2-dimethylhexahydrobenzo[d]oxazol-3(2H)-yl)benzo[d]thiazol-6-yl)methyl)-1H-benzo[d]imidazol-5-yl)oxy)ethanol

HRID 1848212Notes

Reaction equation

HRID 1848212 reaction equation
[CH3:1][C:2]1([CH3:31])[N:6]([C:7]2[S:8][C:9]3[CH:15]=[C:14]([CH2:16][N:17]4[C:21]5[CH:22]=[CH:23][C:24]([OH:26])=[CH:25][C:20]=5[N:19]=[CH:18]4)[CH:13]=[CH:12][C:10]=3[N:11]=2)[C@@H:5]2[CH2:27][CH2:28][CH2:29][CH2:30][C@H:4]2[O:3]1.I[CH2:33][CH2:34][OH:35].C([O-])([O-])=O.[Cs+].[Cs+].CN1C(=O)CCC1>CCOC(C)=O>[CH3:1][C:2]1([CH3:31])[N:6]([C:7]2[S:8][C:9]3[CH:15]=[C:14]([CH2:16][N:17]4[C:21]5[CH:22]=[CH:23][C:24]([O:26][CH2:33][CH2:34][OH:35])=[CH:25][C:20]=5[N:19]=[CH:18]4)[CH:13]=[CH:12][C:10]=3[N:11]=2)[C@@H:5]2[CH2:27][CH2:28][CH2:29][CH2:30][C@H:4]2[O:3]1

Participants

6

Reactant 4

HCID 10796Cesium carbonateHCID 12225IodoethanolHCID 13387N-methyl-2-pyrrolidoneHCID 866811861-((2-((3aR,7aR)-2,2-dimethylhexahydrobenzo[d]oxazol-3(2H)-yl)benzo[d]thiazol-6-yl)methyl)-1H-benzo[d]imidazol-5-ol

Product 1

HCID 866811882-((1-((2-((3aR,7aR)-2,2-dimethylhexahydrobenzo[d]oxazol-3(2H)-yl)benzo[d]thiazol-6-yl)methyl)-1H-benzo[d]imidazol-5-yl)oxy)ethanolYield 39%

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent

Conditions

Temperature
100 °C

Procedure

A stirred mixture of 1-((2-((3aR,7aR)-2,2-dimethylhexahydrobenzo[d]oxazol-3(2H)-yl)benzo[d]thiazol-6-yl)methyl)-1H-benzo[d]imidazol-5-ol (60 mg, 0.14 mmol) from Step 1 of Example 171, 2-iodoethanol (60 mg, 0.35 mmol), Cs2CO3 (137 mg, 0.42 mmol), and NMP (2 mL) was heated at 100° C. for 24 h. The mixture was diluted with EtOAc and washed with brine. The organic layer was separated, dried over Na2SO4, filtered, and concentrated under reduced pressure. The residue was purified by preparative TLC to afford 2-((1-((2-((3aR,7aR)-2,2-dimethylhexahydrobenzo[d]oxazol-3(2H)-yl)benzo[d]thiazol-6-yl)methyl)-1H-benzo[d]imidazol-5-yl)oxy)ethanol (26 mg, 39%) as a light yellow solid. 1H NMR (300 MHz, CDCl3) δ 7.93 (s, 1H), 7.58 (d, J=8.1 Hz, 1H), 7.40 (s, 1H), 7.32 (s, 1H), 7.16-7.19 (m, 2H), 6.91 (m, 1H), 5.36 (s, 2H), 4.13 (t, J=9.0 Hz, 2H), 3.98 (t, J=9.0 Hz, 2H), 3.65 (m, 1H), 3.08 (m, 1H), 2.80 (m, 1H), 2.14 (m, 1H), 1.84-1.92 (m, 2H), 1.78 (s, 3H), 1.63 (s, 3H), 1.28-1.40 (m, 4H); LCMS (ESI) m/z 479 (M+H)+.

Workup

  1. washwashed with brine
  2. customThe organic layer was separated
  3. dry with materialdried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated under reduced pressure
  6. customThe residue was purified by preparative TLC

Sources & evidence

ORD record
ord-51faf09a644e41f383a3b0fd03cbbe59
Source dataset
uspto-grants-2015_02
Patent number
US08952058B2

Reaction notes

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