Acetonitrile → {3-{[tert-Butyl(diphenyl)silyl]oxy}-1-[4-(1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-pyrrolo[2,3-b]pyridin-4-yl)-1H-pyrazol-1-yl]cyclobutyl}acetonitrile

HRID 1426331Notes

Reaction equation

HRID 1426331 reaction equation
[Si:1]([O:18][CH:19]1[CH2:22][C:21](=[CH:23][C:24]#[N:25])[CH2:20]1)([C:14]([CH3:17])([CH3:16])[CH3:15])([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[NH:26]1[CH:30]=[C:29]([C:31]2[CH:36]=[CH:35][N:34]=[C:33]3[N:37]([CH2:40][O:41][CH2:42][CH2:43][Si:44]([CH3:47])([CH3:46])[CH3:45])[CH:38]=[CH:39][C:32]=23)[CH:28]=[N:27]1.C(#N)C.N12CCCN=C1CCCCC2>>[Si:1]([O:18][CH:19]1[CH2:22][C:21]([CH2:23][C:24]#[N:25])([N:26]2[CH:30]=[C:29]([C:31]3[CH:36]=[CH:35][N:34]=[C:33]4[N:37]([CH2:40][O:41][CH2:42][CH2:43][Si:44]([CH3:47])([CH3:46])[CH3:45])[CH:38]=[CH:39][C:32]=34)[CH:28]=[N:27]2)[CH2:20]1)([C:14]([CH3:17])([CH3:16])[CH3:15])([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

5

Reactant 4

HCID 6342AcetonitrileHCID 811841,8-Diazabicyclo(5.4.0)undec-7-ene2×HCID 574775784-(1H-Pyrazol-4-yl)-1-[2-(trimethylsilyl)ethoxy]methyl-1H-pyrrolo[2,3-b]pyridineHCID 66824450(3-{[Tert-butyl(diphenyl)silyl]oxy}cyclobutylidene)acetonitrile

Product 1

HCID 67954160{3-{[tert-Butyl(diphenyl)silyl]oxy}-1-[4-(1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-pyrrolo[2,3-b]pyridin-4-yl)-1H-pyrazol-1-yl]cyclobutyl}acetonitrile

Procedure

To a solution of (3-{[tert-butyl(diphenyl)silyl]oxy}cyclobutylidene)acetonitrile (4.0 g, 8.7 mmol, from Step 4 of Example 1a) and 4-(1H-pyrazol-4-yl)-1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-pyrrolo[2,3-b]pyridine (1.50 g, 4.77 mmol, US 20090181959) in acetonitrile (10 mL, 200 mmol) was added 1,8-diazabicyclo[5.4.0]undec-7-ene (0.68 mL, 4.6 mmol). The reaction was stirred overnight. A further portion of 1,8-diazabicyclo[5.4.0]undec-7-ene (0.7 mL, 5 mmol) was added and the reaction was allowed to continue for an additional 72 hours. Acetonitrile was removed in vacuo. Flash chromatography on silica gel, eluting with 0%-30% EtOAc/Hexanes, was used to purify product, which was obtained as a mixture of diastereomers (2 g, 60%). 1H NMR (300 MHz, CDCl3) δ 8.33 (d, J=5.0 Hz, 1H major), 8.29 (d, J=5.0 Hz, 1H minor), 8.06 (s, 1H major), 8.03 (s, 1H major), 8.00 (s, 1H minor), 7.93 (s, 1H minor), 7.70-7.31 (m, 10H major and 10H minor), 7.19 (d, J=5.0 Hz, 1H major), 7.11 (d, J=5.0 Hz, 1H minor), 6.74 (d, J=3.6 Hz, 1H major), 6.63 (d, J=3.7 Hz, 1H minor), 5.71 (s, 2H major), 5.69 (s, 2H minor), 4.49-4.39 (m, 1H minor), 4.33 (tt, J=7.0, 7.0 Hz, 1H major), 3.67-3.45 (m, 2H major and 2H minor), 3.22 (s, 2H minor), 3.11-2.95 (m, 2H minor), 2.92-2.77 (m, 6H major), 2.65-2.50 (m, 2H minor), 1.08 (s, 9H minor), 1.03 (s, 9H major), 0.98-0.80 (m, 2H major and 2H minor), −0.06 (s, 9H major), −0.08 (s, 9H minor); LCMS (M+H)+: 662.1.

Workup

  1. waitto continue for an additional 72 hours
  2. customAcetonitrile was removed in vacuo
  3. washFlash chromatography on silica gel, eluting with 0%-30% EtOAc/Hexanes
  4. customto purify product
  5. customwhich was obtained as a mixture of diastereomers (2 g, 60%)

Sources & evidence

ORD record
ord-09e3d9109bf34f2388fa5550a3384413
Source dataset
uspto-grants-2015_01
Patent number
US08933085B2

Reaction notes

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