Imidazole → HCID 21034347, compound

HRID 2217153Notes

Reaction equation

HRID 2217153 reaction equation
[Si:1](Cl)([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2].[CH3:9][O:10][C:11]1[C:16]2[C:17](=[O:27])[N:18]3[CH2:25][C@H:24]([OH:26])[CH2:23][C@H:19]3[C:20](=[O:22])[NH:21][C:15]=2[CH:14]=[CH:13][C:12]=1[O:28][CH3:29].N1C=CN=C1.O>CN(C=O)C>[CH3:9][O:10][C:11]1[C:16]2[C:17](=[O:27])[N:18]3[CH2:25][C@H:24]([O:26][Si:1]([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2])[CH2:23][C@H:19]3[C:20](=[O:22])[NH:21][C:15]=2[CH:14]=[CH:13][C:12]=1[O:28][CH3:29]

Participants

6

Reactant 4

HCID 795ImidazoleHCID 962WaterHCID 28928tert-Butyldimethylsilyl chlorideHCID 23574467HCID 23574467, compound

Product 1

HCID 21034347HCID 21034347, compound

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

Solid TBDMS Chloride (8.22 g, 54.44 mmol) was added in one portion to a solution of 4 (7.23 g, 24.74 mmol) and imidazole (8.42 g, 123.72 mmol) in anhydrous DMF (75 mL) and allowed to stir at room temperature for 16 hours. The reaction mixture was poured into water (500 mL) and filtered to afford the crude product (5), which was purified by recrystallisation from EtOH (800 mL) as fine white needles (6.995 g, 17.21 mmol, 70%). 1H NMR (270 MHz, CDCl3) δ 10.06 (s, 1H, NH), 7.37 (s, 1H, ArH), 6.68 (s, 1H, ArH), 4.19-4.14 (m, 1H, 2), 4.06-4.01 (m, 1H, 11a), 3.90 (s, 3H, OMe), 3.88 (s, 3H, OMe), 3.69-3.63 (m, 2H, 3), 2.85-2.80 (m, 1H, 1), 2.05-2.01 (m, 1H, 1); 13C NMR (67.8 MHz, CDCl3) δ 170.4, 170.2, 165.9, 152.1, 145.8, 145.6, 131.1, 130.7, 118.1, 111.9, 104.3, 104.1, 69.2, 69.1, 56.0, 55.9, 55.7, 54.3, 54.0, 35.0, 25.8, 25.7, 25.6, 17.9, −3.0, −3.5, −4.9, −5.0.

Workup

  1. filtrationfiltered

Sources & evidence

ORD record
ord-e942179667e04ff080f27c993027e816
Source dataset
uspto-grants-2008_08
Patent number
US07407951B2

Reaction notes

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