Triethylamine → cyclopropanecarboxylic acid [2-(2,6-dioxo-piperidin-3-yl)-1,3-dioxo-2,3-dihydro-1H-isoindol-5-ylmethyl]-amide

HRID 63452Notes

Reaction equation

HRID 63452 reaction equation
Cl.[NH2:2][CH2:3][C:4]1[CH:5]=[C:6]2[C:10](=[CH:11][CH:12]=1)[C:9](=[O:13])[N:8]([CH:14]1[CH2:19][CH2:18][C:17](=[O:20])[NH:16][C:15]1=[O:21])[C:7]2=[O:22].[CH:23]1([C:26](Cl)=[O:27])[CH2:25][CH2:24]1.C(N(CC)CC)C>C1COCC1>[O:21]=[C:15]1[CH:14]([N:8]2[C:7](=[O:22])[C:6]3[C:10](=[CH:11][CH:12]=[C:4]([CH2:3][NH:2][C:26]([CH:23]4[CH2:25][CH2:24]4)=[O:27])[CH:5]=3)[C:9]2=[O:13])[CH2:19][CH2:18][C:17](=[O:20])[NH:16]1

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 77637Cyclopropanecarbonyl chlorideHCID 670197065-(Aminomethyl)-2-(2,6-dioxopiperidin-3-yl)isoindoline-1,3-dione hydrochloride

Product 1

HCID 57730495cyclopropanecarboxylic acid [2-(2,6-dioxo-piperidin-3-yl)-1,3-dioxo-2,3-dihydro-1H-isoindol-5-ylmethyl]-amideYield 63%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
40 °C

Procedure

To a stirred mixture of 5-aminomethyl-2-(2,6-dioxo-piperidin-3-yl)-isoindole-1,3-dione hydrochloride (1.00 g, 3.10 mmol) and cyclopropanecarbonyl chloride (0.32 g, 3.10 mmol) in THF (35 mL), was added triethylamine (0.88 mL, 6.20 mmol) at room temperature under nitrogen. The mixture was heated to 40° C. for 6 h then cooled to rt. The mixture was filtered and the filtrate diluted with EtOAc (100 mL). The organic layer was washed with dil. aq. HCl (100 mL), water (2×75 mL), dried (MgSO4) and concentrated in vacuo to give cyclopropanecarboxylic acid [2-(2,6-dioxo-piperidin-3-yl)-1,3-dioxo-2,3-dihydro-1H-isoindol-5-ylmethyl]-amide as a white solid (0.69 g, 63% yield): HPLC: Waters Symmetry C18, 5 μm, 3.9×150 mm, 1 mL/min, 240 nm, 25/75 CH3CN/0.1% H3PO4, 2.96 min (98.96%); mp: 163-165° C.; 1H NMR (DMSO-d6) δ 0.62-0.78 (m, 4H), 1.63 (m, 1H), 1.95-2.17 (m, 1H), 2.53-2.67 (m, 2H), 2.79-3.00 (m, 1H), 4.46 (d, J=6.0 Hz, 2H), 5.15 (dd, J=5.4, 12.9 Hz, 1H), 7.67-7.79 (m, 2H), 7.89 (d, J=7.6 Hz, 1H), 8.77 (t, J=5.9 Hz, 1H), 11.13 (s, 1H); 13C NMR (DMSO-d6) δ 6.44, 13.57, 21.99, 30.93, 42.05, 48.99, 121.83, 123.54, 129.74, 131.60, 133.35, 147.77, 166.99, 167.13, 169.82, 172.73, 172.94; Anal Calcd for C18H17N3O5+0.2H2O: C, 60.23; H, 4.89; N, 11.71. Found: C, 60.16; H, 4.54; N, 11.70.

Workup

  1. temperaturethen cooled to rt
  2. filtrationThe mixture was filtered
  3. additionthe filtrate diluted with EtOAc (100 mL)
  4. washThe organic layer was washed with dil. aq. HCl (100 mL), water (2×75 mL)
  5. dry with materialdried (MgSO4)
  6. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-392ac74447db4aa894cf144e233687ff
Source dataset
uspto-grants-2016_09
Patent number
US09447070B2

Reaction notes

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