1-Chloroethyl chloroformate → HCID 10423507, compound

HRID 1743880Notes

Reaction equation

HRID 1743880 reaction equation
[Cl:1][C:2]1[CH:14]=[CH:13][C:12]2[CH2:15][CH2:16][N:17](C)[CH2:18][CH2:19][N:10]3[C:11]=2[C:3]=1[C:4]1[CH2:5][CH2:6][CH2:7][CH2:8][C:9]=13.ClC(OC(Cl)C)=O>ClC(Cl)C>[Cl:1][C:2]1[CH:14]=[CH:13][C:12]2[CH2:15][CH2:16][NH:17][CH2:18][CH2:19][N:10]3[C:11]=2[C:3]=1[C:4]1[CH2:5][CH2:6][CH2:7][CH2:8][C:9]=13

Participants

4

Reactant 2

HCID 5213051-Chloroethyl chloroformateHCID 10356798HCID 10356798, compound

Product 1

HCID 10423507HCID 10423507, compoundYield 101.5%

Reagents, catalysts & solvents 1

HCID 63651,1-DichloroethaneSolvent

Procedure

To a solution of 8-chloro-3-methyl-2,3,4,5,9,10,11,12-octahydro-1H-[1,4]diazocino[7,8,1-jk]carbazole (0.60 g, 2.08 mmole) in dichloroethane (100 mL) was added 1-chloroethyl chloroformate (1.5 mL, 13.76 mmole) and refluxed for 24 hours. The reaction mixture was cooled to room temperature and the solvent removed in vacuo and replaced with methanol (100 mL) and refluxed for another 3 hours. The reaction mixture was cooled to room temperature and the solvent removed in vacuo. The dark residue was dissolved in methylene chloride (200 mL) and washed with aqueous sodium hydroxide (1N, 150 mL), saturated sodium chloride (150 mL), dried (sodium sulfate) and concentrated. Purification by flash column chromatography (silica gel, 1.5% to 3% methanol in dichloromethane) provided 0.58 g of the title compound. This solid was further treated with one equivalent of fumaric acid in ethanol to form a fumarate salt, mp 199-201° C. MS (ES) m/z 275.10 ([M+H]+), MS (ES) m/z 316.13 ([M+ACN+H]+).

Workup

  1. temperaturerefluxed for 24 hours
  2. customthe solvent removed in vacuo
  3. temperaturerefluxed for another 3 hours
  4. temperatureThe reaction mixture was cooled to room temperature
  5. customthe solvent removed in vacuo
  6. dissolutionThe dark residue was dissolved in methylene chloride (200 mL)
  7. washwashed with aqueous sodium hydroxide (1N, 150 mL), saturated sodium chloride (150 mL)
  8. dry with materialdried (sodium sulfate)
  9. concentrationconcentrated
  10. customPurification by flash column chromatography (silica gel, 1.5% to 3% methanol in dichloromethane)

Sources & evidence

ORD record
ord-4171c7c83b714e6b9887b04b5f951f95
Source dataset
uspto-grants-2006_03
Patent number
US07012089B2

Reaction notes

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