1,2-Dichloroethane → Ethyl (+/-)-10,11-dihydro-3-[[[2-(2-pyridylamino)ethyl]amino]carbonyl]-5H-dibenzo[a,d]cycloheptene-10-acetate

HRID 613390Notes

Reaction equation

HRID 613390 reaction equation
C(Cl)CCl.[C:5]([C:8]1[CH:9]=[CH:10][C:11]2[CH2:17][CH:16]([CH2:18][C:19]([O:21][CH2:22][CH3:23])=[O:20])[C:15]3[CH:24]=[CH:25][CH:26]=[CH:27][C:14]=3[CH2:13][C:12]=2[CH:28]=1)(O)=[O:6].Cl.Cl.[NH2:31][CH2:32][CH2:33][NH:34][C:35]1[CH:40]=[CH:39][CH:38]=[CH:37][N:36]=1.C1C=CC2N(O)N=NC=2C=1.O.C(N(C(C)C)CC)(C)C>CN(C=O)C>[N:36]1[CH:37]=[CH:38][CH:39]=[CH:40][C:35]=1[NH:34][CH2:33][CH2:32][NH:31][C:5]([C:8]1[CH:9]=[CH:10][C:11]2[CH2:17][CH:16]([CH2:18][C:19]([O:21][CH2:22][CH3:23])=[O:20])[C:15]3[CH:24]=[CH:25][CH:26]=[CH:27][C:14]=3[CH2:13][C:12]=2[CH:28]=1)=[O:6]

Participants

8

Reactant 6

HCID 111,2-DichloroethaneHCID 962WaterHCID 757711-HydroxybenzotriazoleHCID 81531DiisopropylethylamineHCID 14238461N~1~-(Pyridin-2-yl)ethane-1,2-diamine--hydrogen chloride (1/2)HCID 15516628Ethyl (+/-)-10,11-dihydro-3-carboxy-5H-dibenzo[a,d]cycloheptene-10-acetate

Product 1

HCID 54300392Ethyl (+/-)-10,11-dihydro-3-[[[2-(2-pyridylamino)ethyl]amino]carbonyl]-5H-dibenzo[a,d]cycloheptene-10-acetateYield 92%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

EDC (112.7 mg, 0.59 mmole) was added all at once to a solution of ethyl (±)-10,11-dihydro-3-carboxy-5H-dibenzo[a,d]cycloheptene-10-acetate (157.8 mg, 0.49 mmole), 2-[(2-aminoethyl)amino]pyridine dihydrochloride (123.5 mg, 0.59 mmole), HOBt.H2O (79.5 mg, 0.59 mmole), and diisopropylethylamine (0.43 mL, 2.45 mmole) in anhydrous DMF (2.5 mL) at RT. The reaction was stirred at RT for 18 hr, then was concentrated. The residue was reconcentrated from xylenes, then was diluted with H2O (5 mL) and extracted sequentially with EtOAc (2×5 mL) and CHCl3 (2×5 mL). The organic layers were combined and treated with a little MeOH to dissolve a small amount of insoluble material. Drying (MgSO4), concentration, and silica gel chromatography (5% MeOH/CHCl3) gave the title compound (199.1 mg, 92%) as a yellow oil: TLC (5% MeOH/CHCl3) Rf 0.42; 1H NMR (400, CDCl3) δ 8.10 (d, J=3.5 Hz, 1 H), 8.02 (br s, 1 H), 7.60 (app. narrow d, 1 H), 7.53 (app. dd, 1 H), 7.33-7.42 (m, 1 H), 7.08-7.22 (m, 5 H), 6.57-6.65 (m, 1 H), 6.45 (d, J=8.3 Hz, 1 H), 4.79-4.90 (m, 1 H), 4.36 (d,J=15.1 Hz, 1 H), 4.11-4.26 (m, 2 H), 3.92 (d, J=15.1 Hz, 1 H), 3.80-3.95 (m, 1 H), 3.55-3.72 (m, 4 H), 3.38 (dd, J=15.2, 4.1 Hz, 1 H), 3.03 (dd, J=15.2, 9.5 Hz, 1 H), 2.66 (dd, J=15.8,4.8 Hz, 1 H), 2.50 (dd, J=15.8, 9.6 Hz, 1 H), 1.27 (t, J=7.2 Hz, 3 H); MS (ES) m/e 444 (M+H)+.

Workup

  1. customat RT
  2. concentrationwas concentrated
  3. additionwas diluted with H2O (5 mL)
  4. extractionextracted sequentially with EtOAc (2×5 mL) and CHCl3 (2×5 mL)
  5. additiontreated with a little MeOH
  6. dissolutionto dissolve a small amount of insoluble material
  7. customDrying
  8. concentration(MgSO4), concentration, and silica gel chromatography (5% MeOH/CHCl3)

Sources & evidence

ORD record
ord-d56b59534d314cb2b7c69255d7a3e17d
Source dataset
uspto-grants-1999_12
Patent number
US06008213

Reaction notes

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