Pyridine → HCID 11648633, compound

HRID 1173363Notes

Reaction equation

HRID 1173363 reaction equation
[C:1](Cl)(=[O:3])[CH3:2].[CH3:5][O:6][C:7]([C:9]1[CH:10]=[C:11]([CH3:33])[C:12]2[O:18][C:17]3[C:19]([Cl:29])=[CH:20][C:21]([N:23]4[CH2:28][CH2:27][NH:26][CH2:25][CH2:24]4)=[CH:22][C:16]=3[CH2:15][S:14](=[O:31])(=[O:30])[C:13]=2[CH:32]=1)=[O:8].N1C=CC=CC=1>ClCCl>[CH3:5][O:6][C:7]([C:9]1[CH:10]=[C:11]([CH3:33])[C:12]2[O:18][C:17]3[C:19]([Cl:29])=[CH:20][C:21]([N:23]4[CH2:24][CH2:25][N:26]([C:1](=[O:3])[CH3:2])[CH2:27][CH2:28]4)=[CH:22][C:16]=3[CH2:15][S:14](=[O:30])(=[O:31])[C:13]=2[CH:32]=1)=[O:8]

Participants

5

Reactant 3

HCID 1049PyridineHCID 6367Acetyl chlorideHCID 115410724-Chloro-6-methyl-10,10-dioxo-2-piperazin-1-yl-10,11-dihydro-5-oxa-10lambda*6*-thia-dibenzo[a,d]cyclo heptene-8-carboxylic acid methyl ester

Product 1

HCID 11648633HCID 11648633, compound

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Conditions

Temperature
20 °C

Procedure

Acetyl chloride (0.15 mL, 2.06 mmol) was added to a solution of 4-chloro-6-methyl-10,10-dioxo-2-piperazin-1-yl-10,11-dihydro-5-oxa-10lambda*6*-thia-dibenzo[a,d]cycloheptene-8-carboxylic acid methyl ester (free base of example 16, 0.3 g, 0.68 mmol) in dichloromethane (15 mL) and stirred at 20° C., for 10 min. To this, pyridine (0.33 mL, 4.12 mmol) was added and the mixture was stirred further for 18 h. The solvent was removed from the mixture and water (15 mL) was added. The pH of the reaction mixture was adjusted to 3 using aqueous hydrochloric acid (10%). The solid obtained was filtered and the crude obtained was purified by column chromatography (silica gel, 2% methanol in chloroform) to obtain the title compound. Yield: 0.3 g, (91%); 1H NMR (DMSO-d6, 300 MHz): δ 2.02 (s, 3H, CH3), 2.63 (s, 3H, CH3), 3.15 (s, 2H, CH2), 3.17 (s, 2H, CH2), 3.55 (s, 4H, 2CH2), 3.85, (s, 3H, OCH3), 5.16 (s, 2H, CH2), 7.09 (d, 1H, Ar), 7.15 (d, 1H, Ar), 8.08 (t, 1H, Ar), 8.15 (t, 1H, Ar); MS: m/e (ES+) 479 (M+1).

Workup

  1. stirringthe mixture was stirred further for 18 h
  2. customThe solvent was removed from the mixture and water (15 mL)
  3. additionwas added
  4. customThe solid obtained
  5. filtrationwas filtered
  6. customthe crude obtained
  7. customwas purified by column chromatography (silica gel, 2% methanol in chloroform)

Sources & evidence

ORD record
ord-d1ec8ec51ce746eabe3a485e640b7332
Source dataset
uspto-grants-2010_11
Patent number
US07834052B2

Reaction notes

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