4-Chlorobenzoyl chloride → 4-chloro-N-[2-(2,6-dioxo-piperidin-3-yl)-1,3-dioxo-2,3-dihydro-1H-isoindol-4-ylmethyl]-benzamide

HRID 448461Notes

Reaction equation

HRID 448461 reaction equation
Cl.[NH2:2][CH2:3][C:4]1[CH:12]=[CH:11][CH:10]=[C:9]2[C:5]=1[C:6](=[O:22])[N:7]([CH:14]1[CH2:19][CH2:18][C:17](=[O:20])[NH:16][C:15]1=[O:21])[C:8]2=[O:13].C(N(C(C)C)CC)(C)C.[Cl:32][C:33]1[CH:41]=[CH:40][C:36]([C:37](Cl)=[O:38])=[CH:35][CH:34]=1>C(Cl)Cl>[Cl:32][C:33]1[CH:41]=[CH:40][C:36]([C:37]([NH:2][CH2:3][C:4]2[CH:12]=[CH:11][CH:10]=[C:9]3[C:5]=2[C:6](=[O:22])[N:7]([CH:14]2[CH2:19][CH2:18][C:17](=[O:20])[NH:16][C:15]2=[O:21])[C:8]3=[O:13])=[O:38])=[CH:35][CH:34]=1

Participants

5

Reactant 3

HCID 85014-Chlorobenzoyl chlorideHCID 81531DiisopropylethylamineHCID 219885254-(aminomethyl)-2-(2,6-dioxopiperidin-3-yl)-2,3-dihydro-1H-isoindole-1,3-dione hydrochloride

Product 1

HCID 588272454-chloro-N-[2-(2,6-dioxo-piperidin-3-yl)-1,3-dioxo-2,3-dihydro-1H-isoindol-4-ylmethyl]-benzamideYield 54.4%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a stirred suspension of 4-aminomethyl-2-(2,6-dioxo-piperidin-3-yl)-isoindole-1,3-dione hydrochloride (0.7 g, 2.16 mmol) in CH2Cl2 (60 ml), was added diisopropylethylamine (0.94 mL, 5.4 mmol) and 4-chlorobenzoyl chloride (0.5 g, 2.8 mmol). The mixture was stirred at room temperature overnight and a suspension was obtained. The reaction mixture was quenched with MeOH (1 mL). The suspension was then filtered, and the solid was rinsed with CH2Cl2 (10 mL) to afford 4-chloro-N-[2-(2,6-dioxo-piperidin-3-yl)-1,3-dioxo-2,3-dihydro-1H-isoindol-4-ylmethyl]-benzamide as a white solid (0.5 g, 52%): mp, 233-235° C.; HPLC: Waters Symmetry C-18, 3.9×150 mm, 5 micro, 1 mL/min, 240 nm, 40/60 (CH3CN/H2O): tR=4.7 min. (99%); 1H NMR (DMSO-d6): δ 2.06-2.11 (m, 1H), 2.53-2.64 (m, 2H), 2.84-2.93 (m, 1H), 4.95 (d, J=5.8 Hz, 2H), 5.15-5.20 (dd, J=5, 12 Hz, 1H), 7.56-7.59 (dd, J=1.7, 6.8 Hz, 2H), 7.72-7.83 (m, 3H), 7.93-7.96 (dd, J=1.8, 6.8 Hz, 2H), 9.23 (t, J=6 Hz, 1H), 11.15 (s, 1H). 13C NMR (DMSO-d6) δ: 21.97, 30.92, 38.38, 48.86, 121.90, 127.15, 128.45, 129.25, 131.53, 132.65, 133.09, 134.80, 136.28, 139.08, 165.57, 166.94, 167.51, 169.81, 172.74. Anal Calcd for C21H16ClN3O5: C, 59.23; H, 3.79; N, 9.87; Cl, 8.33. Found: C, 59.27; H, 3.42; N, 9.75; Cl, 8.57.

Workup

  1. customa suspension was obtained
  2. customThe reaction mixture was quenched with MeOH (1 mL)
  3. filtrationThe suspension was then filtered
  4. washthe solid was rinsed with CH2Cl2 (10 mL)

Sources & evidence

ORD record
ord-18b3d4bcc3b8461f98f17d67ef17546a
Source dataset
uspto-grants-2013_07
Patent number
US08481568B2

Reaction notes

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