1-Isocyanato-4-methoxybenzene → HCID 46843364, compound

HRID 533744Notes

Reaction equation

HRID 533744 reaction equation
[Cl:1][C:2]1[CH:14]=[N:13][C:5]2[NH:6][C:7]3[CH2:12][CH2:11][NH:10][CH2:9][C:8]=3[C:4]=2[CH:3]=1.CCN(C(C)C)C(C)C.[CH3:24][O:25][C:26]1[CH:31]=[CH:30][C:29]([N:32]=[C:33]=[O:34])=[CH:28][CH:27]=1.Cl.CCOCC>C(Cl)Cl.CCOCC>[ClH:1].[CH3:24][O:25][C:26]1[CH:31]=[CH:30][C:29]([NH:32][C:33]([N:10]2[CH2:11][CH2:12][C:7]3[NH:6][C:5]4[N:13]=[CH:14][C:2]([Cl:1])=[CH:3][C:4]=4[C:8]=3[CH2:9]2)=[O:34])=[CH:28][CH:27]=1

Participants

7

Reactant 4

HCID 794431-Isocyanato-4-methoxybenzeneHCID 81531DiisopropylethylamineHCID 10953452Ether hydrochlorideHCID 66677239HCID 66677239, compound

Product 1

HCID 46843364HCID 46843364, compoundYield 31.8%

Reagents, catalysts & solvents 2

HCID 3283Diethyl EtherSolventHCID 6344DichloromethaneSolvent

Procedure

3-Chloro-6,7,8,9-tetrahydro-5H-dipyrido[2,3-b;3′,4′-d]pyrrole (50 mg, 0.24 mmol), and DIEA (0.04 mL, 0.24 mmol) were dissolved in DCM (2 mL). 4-Methoxyphenyl isocyanate (0.03 mL, 0.26 mmol) was added dropwise, and the reaction solution was stirred overnight at room temperature. The crude reaction mixture was concentrated, and converted to the HCl salt by dissolving the crude material in MeOH (2 ml) and adding 1 M HCl/ether (2 equiv). The resulting solution was refrigerated overnight. Additional ether was added to drive precipitate formation. The resulting precipitate was filtered and dried under vacuum to provide 27 (15 mg, 16% yield) as a yellow solid. LC-MS (M+H=359, obsd.=359).

Workup

  1. customThe crude reaction mixture
  2. concentrationwas concentrated
  3. dissolutionby dissolving the crude material in MeOH (2 ml)
  4. waitThe resulting solution was refrigerated overnight
  5. filtrationThe resulting precipitate was filtered
  6. customdried under vacuum

Sources & evidence

ORD record
ord-149a889929ab474ab108187df3644c4b
Source dataset
uspto-grants-2014_10
Patent number
US08853391B2

Reaction notes

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