6-Iodo-1-[2-(trimethyl-silanyl)-ethoxymethyl]-3-{1-[2-(trimethyl-silanyl)-ethoxymethyl]-1H-benzoimidazol-2-yl}-1H-indazole → 6-[5-methoxy-2-hydroxymethyl-4-(2-trimethylsilanyl-ethoxymethoxy)-phenyl]-1-(2-trimethylsilanyl-ethoxymethyl)-3-[1-(2-trimethylsilanyl-ethoxymethyl)-1H-benzoimidazol-2-yl]-1H-indazole

HRID 724412Notes

Reaction equation

HRID 724412 reaction equation
I[C:2]1[CH:10]=[C:9]2[C:5]([C:6]([C:19]3[N:23]([CH2:24][O:25][CH2:26][CH2:27][Si:28]([CH3:31])([CH3:30])[CH3:29])[C:22]4[CH:32]=[CH:33][CH:34]=[CH:35][C:21]=4[N:20]=3)=[N:7][N:8]2[CH2:11][O:12][CH2:13][CH2:14][Si:15]([CH3:18])([CH3:17])[CH3:16])=[CH:4][CH:3]=1.[CH3:36][O:37][C:38]1[C:43]([O:44][CH2:45][O:46][CH2:47][CH2:48][Si:49]([CH3:52])([CH3:51])[CH3:50])=[CH:42][C:41]([CH2:53][OH:54])=[C:40]([Sn](C)(C)C)[CH:39]=1>O1CCOCC1.CCOC(C)=O>[CH3:36][O:37][C:38]1[C:43]([O:44][CH2:45][O:46][CH2:47][CH2:48][Si:49]([CH3:52])([CH3:51])[CH3:50])=[CH:42][C:41]([CH2:53][OH:54])=[C:40]([C:2]2[CH:10]=[C:9]3[C:5]([C:6]([C:19]4[N:23]([CH2:24][O:25][CH2:26][CH2:27][Si:28]([CH3:30])([CH3:29])[CH3:31])[C:22]5[CH:32]=[CH:33][CH:34]=[CH:35][C:21]=5[N:20]=4)=[N:7][N:8]3[CH2:11][O:12][CH2:13][CH2:14][Si:15]([CH3:18])([CH3:17])[CH3:16])=[CH:4][CH:3]=2)[CH:39]=1

Participants

5

Reactant 2

HCID 218774466-Iodo-1-[2-(trimethyl-silanyl)-ethoxymethyl]-3-{1-[2-(trimethyl-silanyl)-ethoxymethyl]-1H-benzoimidazol-2-yl}-1H-indazoleHCID 21877510(4-Methoxy-5-(2-trimethylsilanyl-ethoxymethoxy)-2-trimethylstannanyl-phenyl]-methanol

Product 1

HCID 218774016-[5-methoxy-2-hydroxymethyl-4-(2-trimethylsilanyl-ethoxymethoxy)-phenyl]-1-(2-trimethylsilanyl-ethoxymethyl)-3-[1-(2-trimethylsilanyl-ethoxymethyl)-1H-benzoimidazol-2-yl]-1H-indazoleYield 60%

Reagents, catalysts & solvents 2

HCID 8857Ethyl AcetateSolventHCID 312751,4-DioxaneSolvent

Procedure

6-Iodo-1-[2-(trimethyl-silanyl)-ethoxymethyl]-3-{1-[2-(trimethyl-silanyl)-ethoxymethyl]-1H-benzoimidazol-2-yl}-1H-indazole [Example 24(a), step (v)] (300 mg, 0.48 mmol) and [4-methoxy-5-(2-trimethylsilanyl-ethoxymethoxy)-2-trimethylstannanyl-phenyl]-methanol (282 mg, 0.63 mmol) were stirred in dioxane (8 mL) under argon at 98° C. for 16 h. The reaction was allowed to cool and was diluted with EtOAc. Organics were washed with sat NaHCO3 and brine, dried (Na2SO4), and concentrated in vacuo. Purification by silica gel chromatography (20% EtOAc/hexanes) gave 224 mg (60%) of 6-[5-methoxy-2-hydroxymethyl-4-(2-trimethylsilanyl-ethoxymethoxy)-phenyl]-1-(2-trimethylsilanyl-ethoxymethyl)-3-[1-(2-trimethylsilanyl-ethoxymethyl)-1H-benzoimidazol-2-yl]-1H-indazol as a faint yellow oil. 1H NMR (300 MHz, CDCl3) δ 8.70 (d, 1H, J=8.4 Hz), 7.89–7.92 (m, 1H), 7.63–7.66 (m, 2H), 7.34–7.41 (m, 4H), 6.91 (s, 1H), 6.29 (s, 2H), 5.83 (s, 2H), 5.36 (s, 2H), 4.55 (s, 2H), 3.78–3.92 (m, 5H), 3.59–3.70 (m, 4H), 0.83–1.04 (m, 6H), 0.03 (s, 9H), −0.04 (s, 9H), −0.13 (s, 9 Hz).

Workup

  1. temperatureto cool
  2. washOrganics were washed with sat NaHCO3 and brine
  3. dry with materialdried (Na2SO4)
  4. concentrationconcentrated in vacuo
  5. customPurification by silica gel chromatography (20% EtOAc/hexanes)

Sources & evidence

ORD record
ord-12d224c2bc554d8a9c4a44b025e52c1b
Source dataset
uspto-grants-2006_11
Patent number
US07141587B2

Reaction notes

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