alpha-Naphthyl isocyanate → HCID 58827301, compound

HRID 448425Notes

Reaction equation

HRID 448425 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:23]1([N:33]=[C:34]=[O:35])[C:32]2[C:27](=[CH:28][CH:29]=[CH:30][CH:31]=2)[CH:26]=[CH:25][CH:24]=1.C(N(C(C)C)CC)(C)C>N1C=CC=CC=1>[O:21]=[C:15]1[CH:14]([N:7]2[C:6](=[O:22])[C:5]3[C:9](=[CH:10][CH:11]=[CH:12][C:4]=3[CH2:3][NH:2][C:34]([NH:33][C:23]3[C:32]4[C:27](=[CH:28][CH:29]=[CH:30][CH:31]=4)[CH:26]=[CH:25][CH:24]=3)=[O:35])[C:8]2=[O:13])[CH2:19][CH2:18][C:17](=[O:20])[NH:16]1

Participants

5

Reactant 3

HCID 66589alpha-Naphthyl isocyanateHCID 81531DiisopropylethylamineHCID 219885254-(aminomethyl)-2-(2,6-dioxopiperidin-3-yl)-2,3-dihydro-1H-isoindole-1,3-dione hydrochloride

Product 1

HCID 58827301HCID 58827301, compoundYield 60%

Reagents, catalysts & solvents 1

HCID 1049PyridineSolvent

Conditions

Temperature
40 °C

Procedure

A mixture of 4-aminomethyl-2-(2,6-dioxopiperidin-3-yl)isoindole-1,3-dione hydrochloride (0.50 g, 1.6 mmol), 1-naphthyl isocyanate (0.26 g, 1.6 mmol), and diisopropylethylamine (0.40 g, 3.1 mmol) in 10 mL pyridine was warmed to 40° C. with stirring under N2, and the resulting solution was stirred at the same temperature for 2 hours. The mixture was cooled, and the solvent was evaporated under vacuum. The residue was chromatographed, eluting with 95:5 methylene chloride-methanol, to provide 0.40 g of the product in 60% yield: mp 250-252° C.; 1H NMR (DMSO-d6) δ 2.06-2.11 (m, 1H), 2.51-2.65 (m, 2H), 2.85-2.97 (m, 1H), 4.78 (d, J=6.0 Hz, 2H), 5.18 (dd, J=12.6 Hz, d=5.4 Hz, 1H), 7.23 (t, J=6.0, 1H), 7.41 (t, J=7.9 Hz, 1H), 7.49-7.58 (m, 3H), 7.80-7.91 (m, 4H), 7.98 (d, J=7.3, 1H), 8.12 (d, J=7.6 Hz, 1H), 8.81 (s, 1H), 11.20 (s, 1H); 13C NMR (DMSO-d6) δ 22.0, 31.0, 38.9, 48.9, 116.8, 121.4, 121.9, 122.3, 125.4, 125.7, 125.8, 125.9, 127.3, 128.3, 131.7, 133.7, 133.8, 134.8, 134.9, 140.2, 155.7, 167.0, 167.6, 169.8, 172.8; Anal. calcd. for C25H20N4O5.0.25H2O: C, 65.14; H, 4.48; N, 12.15. Found: C, 65.08; H, 4.48; N, 11.96.

Workup

  1. stirringthe resulting solution was stirred at the same temperature for 2 hours
  2. temperatureThe mixture was cooled
  3. customthe solvent was evaporated under vacuum
  4. customThe residue was chromatographed
  5. washeluting with 95:5 methylene chloride-methanol

Sources & evidence

ORD record
ord-8c0295370a4b419d939fa0ea4e1875bb
Source dataset
uspto-grants-2013_07
Patent number
US08481568B2

Reaction notes

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