Tetrabutylammonium Fluoride → HCID 86687081, compound

HRID 1402228Notes

Reaction equation

HRID 1402228 reaction equation
[C:1]([C:5]1[CH:6]=[C:7]([NH:24][C:25]([NH:27][C@@H:28]2[C:37]3[C:32](=[CH:33][CH:34]=[CH:35][CH:36]=3)[C@H:31]([O:38][C:39]3[CH:40]=[CH:41][C:42]4[N:43]([C:45]([N:48]5[CH2:53][CH2:52][CH2:51][CH2:50][CH2:49]5)=[N:46][N:47]=4)[CH:44]=3)[CH2:30][CH2:29]2)=[O:26])[N:8]([C:10]2[CH:15]=[CH:14][C:13]([O:16][Si](C(C)(C)C)(C)C)=[CH:12][CH:11]=2)[N:9]=1)([CH3:4])([CH3:3])[CH3:2].CCCC[N+](CCCC)(CCCC)CCCC.[F-]>C1COCC1.O>[C:1]([C:5]1[CH:6]=[C:7]([NH:24][C:25]([NH:27][C@@H:28]2[C:37]3[C:32](=[CH:33][CH:34]=[CH:35][CH:36]=3)[C@H:31]([O:38][C:39]3[CH:40]=[CH:41][C:42]4[N:43]([C:45]([N:48]5[CH2:53][CH2:52][CH2:51][CH2:50][CH2:49]5)=[N:46][N:47]=4)[CH:44]=3)[CH2:30][CH2:29]2)=[O:26])[N:8]([C:10]2[CH:15]=[CH:14][C:13]([OH:16])=[CH:12][CH:11]=2)[N:9]=1)([CH3:4])([CH3:2])[CH3:3]

Participants

5

Reactant 2

HCID 2724141Tetrabutylammonium FluorideHCID 86687082HCID 86687082, compound

Product 1

HCID 86687081HCID 86687081, compoundYield 18%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Procedure

A mixture of Intermediate 70a (124 mg, 169 μmol) and TBAF (1M in THF, 0.34 mL, 0.34 mmol) in THF (5 mL) was stirred for 1 h. The mixture was diluted with water and extracted with EtOAc (3×). The combined organic extracts were washed with brine, and concentrated in vacuo. The residue was purified by FCC, using 0-20% MeOH in DCM, then further purified by HPLC (30-98% MeCN in H2O, 0.1% HCO2H) to give the title compound as an off-white solid (18.4 mg, 18%). LCMS (Method 5) Rt 4.22 min, m/z 621 [MH+]. 1H NMR (400 MHz, d6-DMSO): 1.25 (9H, s), 1.61 (2H, m), 1.72 (4H, m), 1.79-1.98 (2H, m), 1.99-2.15 (2H, m), 3.13 (4H, m), 4.81 (1H, m), 5.54 (1H, t, J 4.5), 6.29 (1H, s), 6.85 (2H, m), 7.09 (1H, d, J 8.7), 7.14 (1H, dd, J 9.7, 2.0), 7.20-7.39 (6H, m), 7.59-7.64 (2H, m), 7.95 (1H, s), 9.77 (1H, br s).

Workup

  1. extractionextracted with EtOAc (3×)
  2. washThe combined organic extracts were washed with brine
  3. concentrationconcentrated in vacuo
  4. customThe residue was purified by FCC
  5. customfurther purified by HPLC (30-98% MeCN in H2O, 0.1% HCO2H)

Sources & evidence

ORD record
ord-d4e72808c2244aabbf9a96e3030aa7f3
Source dataset
uspto-grants-2014_12
Patent number
US08907094B2

Reaction notes

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