Benzyloxyacetyl chloride → HCID 24963324, compound

HRID 1409641Notes

Reaction equation

HRID 1409641 reaction equation
[NH2:1][C:2]1[CH:11]=[CH:10][CH:9]=[C:8]2[C:3]=1[C:4](=[O:21])[N:5]([CH:13]1[CH2:18][CH2:17][C:16](=[O:19])[NH:15][C:14]1=[O:20])[C:6]([CH3:12])=[N:7]2.[CH2:22]([O:29][CH2:30][C:31](Cl)=[O:32])[C:23]1[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=1>O1CCCC1>[CH2:22]([O:29][CH2:30][C:31]([NH:1][C:2]1[CH:11]=[CH:10][CH:9]=[C:8]2[C:3]=1[C:4](=[O:21])[N:5]([CH:13]1[CH2:18][CH2:17][C:16](=[O:19])[NH:15][C:14]1=[O:20])[C:6]([CH3:12])=[N:7]2)=[O:32])[C:23]1[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=1

Participants

4

Reactant 2

HCID 177085Benzyloxyacetyl chlorideHCID 24967599Avadomide

Product 1

HCID 24963324HCID 24963324, compoundYield 47%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
80 °C

Procedure

To a stirred mixture of 3-(5-amino-2-methyl-4-oxo-4H-quinazolin-3-yl)-piperidine-2,6-dione (0.42 g, 1.4 mmol) in tetrahydrofuran (10 mL), was added benzyloxyacetyl chloride (0.75 mL, 4.8 mmol) and heated at 80° C. for three hours. The mixture was quenched with a few drops of methanol. The solvent was evaporated, and the residue was purified by flash column chromatography (Silica gel, methanol/methylene chloride 4%/96%) to give 2-benzyloxy-N-[3-(2,6-dioxo-piperidin-3-yl)-2-methyl-4-oxo-3,4-dihydro-quinazolin-5-yl]acetamide as a white solid (280 mg, 47% yield); HPLC, Waters Symmetry C18, 5 μm, 3.9×150 mm, 1 mL/min, 240 nm, 10/90 CH3CN/0.1% H3PO4, gradient to 95/5 in 5 min, kept for 5 min, 6.46 min (99.2%); mp, 272-274° C.; 1HNMR (DMSO-d6) δ 2.17-2.22 (m, 1H, CHH), 2.65-2.93 (m, 6H, CHCH2, CH3), 4.13-4.30 (dd, J=15, 36 Hz, 2H, CH2), 4.64 (s, 2H, CH2), 5.33 (dd, J=5, 11 Hz, 1H, CH), 7.25-8.68 (m, 8H, Ar), 11.10 (s, 1H, NH), 12.48 (s, 1H, NH); 13C NMR (DMSO-d6) δ 20.62, 23.38, 30.83, 56.93, 70.17, 72.80, 107.95, 115.38, 120.97, 127.47, 127.53, 128.13, 135.52, 137.33, 138.95, 147.90, 154.90, 162.73, 168.94, 169.28, 172.51, 172.62. LCMS MH=435; Anal Calcd For C23H22N4O5+0.6H2O: C, 62.04; H, 5.25; N, 12.58. Found: C, 61.82; H, 4.90; N, 12.49.

Workup

  1. customThe mixture was quenched with a few drops of methanol
  2. customThe solvent was evaporated
  3. customthe residue was purified by flash column chromatography (Silica gel, methanol/methylene chloride 4%/96%)

Sources & evidence

ORD record
ord-edd5cb22a85f48339f453f6bd65c3c10
Source dataset
uspto-grants-2014_12
Patent number
US08921385B2

Reaction notes

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