Water → HCID 57227886, compound

HRID 357030

Reaction equation

HRID 357030 reaction equation
Cl[CH2:2][CH2:3][CH2:4][CH2:5][S:6][C:7]1[N:12]2[CH:13]=[CH:14][N:15]=[C:11]2[CH:10]=[CH:9][CH:8]=1.[S:16]1[CH:20]=[CH:19][CH:18]=[C:17]1[CH:21]=[C:22]1[S:26][C:25](=[O:27])[NH:24][C:23]1=[O:28].O>CN(C)C=O>[S:16]1[CH:20]=[CH:19][CH:18]=[C:17]1[CH:21]=[C:22]1[S:26][C:25](=[O:27])[N:24]([CH2:2][CH2:3][CH2:4][CH2:5][S:6][C:7]2[N:12]3[CH:13]=[CH:14][N:15]=[C:11]3[CH:10]=[CH:9][CH:8]=2)[C:23]1=[O:28]

Participants

5

Reactant 3

HCID 962WaterHCID 36416932,4-Thiazolidinedione, 5-(2-thienylmethylene)-, (Z)-HCID 18936641Imidazo[1,2-a]pyridine,5-[(4-chlorobutyl)thio]-

Product 1

HCID 57227886HCID 57227886, compound

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
80 °C

Procedure

To a solution of 1.81 g (7.5 mmol) of 5-(4-chlorobutylthio)imidazo[1,2-a]pyridine and 1.59 g (7.5 mmol) of 5-(2-thienylmethylene)thiazolidine-2,4-dione in 70 ml of N,N-dimethylformamide, 1.12 ml (7.5 mmol) of 1,8-diazabicyclo[5.4.0-7-undecene was added, followed by heating at 80° C. for 16 hours. After cooling, the reaction mixture was poured into water, extracted with ethyl acetate, washed with water and dried, after which the solvent was distilled off. The residue was purified by column chromatography (eluent, hexane/ethyl acetate=2/1→1/1→ethyl acetate). The resulting crude crystal was purified by recrystallization (solvent, chloroform/diethyl ether) to yield 1.54 g (49.5%, light yellow crystal) of the desired product.m.p. 116.0°-117.0° C.; 1H-NMR (CDCl3, 200 MHz) δ 1.64-1.92 (4H, m), 3.03 (2H, t, J=7.0 Hz), 3.76 (2H, t, J=7.0 Hz), 6.92 (1H, dd, J=1.0, 7.0 Hz), 7.15 (1H, dd, J=7.2, 9.2 Hz), 7.21 (1H, dd, J=3.8, 5.2 Hz), 7.42 (1H, d, J=3.6 Hz), 7.58 (1H, d, J=9.0 Hz), 7.68 (1H, d, J=5.0 Hz), 7.70 (1H, d, J=1.4 Hz), 7.85 (1H, s), 8.05 (1H, s); IR (KBr) 1728, 1678, 1599, 1369, 1128, 773, 727 cm-1 ; Anal. Calcd for C19H17N3O2S3 : C, 54.92; H, 4.12; N, 10.11. Found: C, 54.67, H, 4.18; N, 10.03

Workup

  1. temperatureAfter cooling
  2. extractionextracted with ethyl acetate
  3. washwashed with water
  4. customdried
  5. distillationafter which the solvent was distilled off
  6. customThe residue was purified by column chromatography (eluent, hexane/ethyl acetate=2/1→1/1→ethyl acetate)
  7. customThe resulting crude crystal was purified by recrystallization (solvent, chloroform/diethyl ether)

Sources & evidence

ORD record
ord-62d37ea2ee774ab8a631b79813a27a4e
Source dataset
uspto-grants-1998_11
Patent number
US05840732

Linked notes

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