Piperidine → 4-Chloro-6-methyl-10,10-dioxo-2-(2-piperidin-1-yl-acetylamino)-10,11-dihydro-5-oxa-10lambda*6*-thia-dibenzo[a,d]cycloheptene-8-carboxylic acid methyl ester

HRID 1927515Notes

Reaction equation

HRID 1927515 reaction equation
[NH:1]1[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.[CH3:7][O:8][C:9]([C:11]1[CH:12]=[C:13]([CH3:34])[C:14]2[O:20][C:19]3[C:21]([Cl:30])=[CH:22][C:23]([NH:25][C:26](=[O:29])[CH2:27]Cl)=[CH:24][C:18]=3[CH2:17][S:16](=[O:32])(=[O:31])[C:15]=2[CH:33]=1)=[O:10]>CN(C=O)C>[CH3:7][O:8][C:9]([C:11]1[CH:12]=[C:13]([CH3:34])[C:14]2[O:20][C:19]3[C:21]([Cl:30])=[CH:22][C:23]([NH:25][C:26](=[O:29])[CH2:27][N:1]4[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]4)=[CH:24][C:18]=3[CH2:17][S:16](=[O:32])(=[O:31])[C:15]=2[CH:33]=1)=[O:10]

Participants

4

Reactant 2

HCID 8082PiperidineHCID 116336414-Chloro-2-(2-chloro-acetylamino)-6-methyl-10,10-dioxo-10,11-dihydro-5-oxa-10lambda*6*-thia-dibenzo[a,d]cycloheptene-8-carboxylic acid methyl ester

Product 1

HCID 1317284964-Chloro-6-methyl-10,10-dioxo-2-(2-piperidin-1-yl-acetylamino)-10,11-dihydro-5-oxa-10lambda*6*-thia-dibenzo[a,d]cycloheptene-8-carboxylic acid methyl ester

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
110 °C

Procedure

Piperidine (0.2 mL, 1.80 mmol) was added to a solution of Example 133 (0.4 g, 0.90 mmol) in dry DMF (10 mL). The reaction mixture was stirred at 110° C. for 5 h, concentrated, treated with water and the solid that precipitated was filtered, washed with water and purified using flash chromatography (silica gel, methanol/chloroform) to obtain the title compound as a white solid. Yield: 0.250 g, (56.30%); 1H NMR (CDCl3): δ 1.65-1.70 (m, 6H, piperidinyl), 2.45-2.50 (m, 4H, piperidinyl), 2.70 (s, 3H, CH3), 3.10 (s, 2H, CH2), 3.95 (s, 3H, OCH3), 4.70 (s, 2H, CH2), 7.55 (s, 1H, Ar), 7.80 (s, 1H, Ar), 8.10 (s, 1H, Ar), 8.50 (s, 1H, Ar), 9.50 (s, 1H, NH); MS: m/e (ES+) 493 (M+1).

Workup

  1. concentrationconcentrated
  2. additiontreated with water
  3. customthe solid that precipitated
  4. filtrationwas filtered
  5. washwashed with water
  6. custompurified

Sources & evidence

ORD record
ord-0c35927c162144189bfac023efa7b648
Source dataset
uspto-grants-2012_05
Patent number
US08183234B2

Reaction notes

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