Hydrochloric Acid → N-[2-(2,6-dioxo-piperidin-3-yl)-1-oxo-2,3-dihydro-1H-isoindol-5-ylmethyl]-benzamide

HRID 63422

Reaction equation

HRID 63422 reaction equation
CS(O)(=O)=O.[NH2:6][CH2:7][C:8]1[CH:9]=[C:10]2[C:14](=[CH:15][CH:16]=1)[C:13](=[O:17])[N:12]([CH:18]1[CH2:23][CH2:22][C:21](=[O:24])[NH:20][C:19]1=[O:25])[CH2:11]2.[C:26](Cl)(=[O:33])[C:27]1[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=1.C(N(CC)CC)C.Cl>C(#N)C>[O:25]=[C:19]1[CH:18]([N:12]2[CH2:11][C:10]3[C:14](=[CH:15][CH:16]=[C:8]([CH2:7][NH:6][C:26](=[O:33])[C:27]4[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=4)[CH:9]=3)[C:13]2=[O:17])[CH2:23][CH2:22][C:21](=[O:24])[NH:20]1

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 7412Benzoyl chlorideHCID 8471TriethylamineHCID 866307653-(5-(Aminomethyl)-1-oxoisoindolin-2-yl)piperidine-2,6-dione methanesulfonate

Product 1

HCID 44539606N-[2-(2,6-dioxo-piperidin-3-yl)-1-oxo-2,3-dihydro-1H-isoindol-5-ylmethyl]-benzamideYield 64%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

To a stirred mixture of 3-(5-aminomethyl-1-oxo-1,3-dihydro-isoindol-2-yl)-piperidine-2,6-dione methane sulfonate (0.50 g, 1.80 mmol) and benzoyl chloride (0.25 g, 1.80 mmol) in acetonitrile (20 mL), was added triethylamine (0.51 mL, 3.60 mmol) at room temperature under nitrogen. After 1 h, 1N aq. HCl (20 mL) was added and the mixture was stirred for 10 min. The product was isolated by filtration, washed with 1N aq. HCl (20 mL), acetonitrile (20 mL) and dried overnight in vacuo to give N-[2-(2,6-dioxo-piperidin-3-yl)-1-oxo-2,3-dihydro-1H-isoindol-5-ylmethyl]-benzamide as a white solid (0.43 g, 64% yield): HPLC: Waters Symmetry C18, 5 μm, 3.9×150 mm, 1 mL/min, 240 nm, 30/70 CH3CN/0.1% H3PO4, 3.17 min (99.25%); mp: 266-268° C.; 1H NMR (DMSO-d6) δ 1.93-2.06 (m, 1H), 2.27-2.47 (m, 1H), 2.53-2.68 (m, 1H), 2.79-3.05 (m, 1H), 4.31 (d, J=17.4 Hz, 1H), 4.45 (d, J=17.4 Hz, 1H), 4.60 (d, J=5.9 Hz, 2H), 5.11 (dd, J=5.0, 13.1 Hz, 1H), 7.42-7.62 (m, 5H), 7.70 (d, J=7.7 Hz, 1H), 7.91 (d, J=7.0 Hz, 2H), 9.16 (t, J=5.9 Hz, 1H), 10.99 (s, 1H); 13C NMR (DMSO-d6) δ 22.5, 31.2, 42.7, 47.1, 51.6, 122.1, 122.9, 127.1, 127.2, 128.3, 130.3, 131.3, 134.2, 142.4, 144.0, 166.3, 167.9, 171.0, 172.8; LCMS: MH=378; Anal Calcd for C21H19N3O4: C, 66.83; H, 5.07; N, 11.13. Found: C, 66.75; H, 5.08; N, 11.18.

Workup

  1. customThe product was isolated by filtration
  2. washwashed with 1N aq. HCl (20 mL), acetonitrile (20 mL)
  3. customdried overnight in vacuo

Sources & evidence

ORD record
ord-795f5b25129c4c80a46631ffadf1fbd5
Source dataset
uspto-grants-2016_09
Patent number
US09447070B2

Linked notes

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