Triethylamine → 3-(4-methoxybenzyl)-8,9-dihydro-3H-pyrazolo[3,4-c][2,7]naphthyridine-7(6H)-carbonyl chloride

HRID 2383463Notes

Reaction equation

HRID 2383463 reaction equation
[CH3:1][O:2][C:3]1[CH:22]=[CH:21][C:6]([CH2:7][N:8]2[C:12]3[N:13]=[CH:14][C:15]4[CH2:16][NH:17][CH2:18][CH2:19][C:20]=4[C:11]=3[CH:10]=[N:9]2)=[CH:5][CH:4]=1.[Cl:23][C:24](Cl)([O:26]C(=O)OC(Cl)(Cl)Cl)Cl.C(N(CC)CC)C>C1COCC1>[CH3:1][O:2][C:3]1[CH:4]=[CH:5][C:6]([CH2:7][N:8]2[C:12]3[N:13]=[CH:14][C:15]4[CH2:16][N:17]([C:24]([Cl:23])=[O:26])[CH2:18][CH2:19][C:20]=4[C:11]=3[CH:10]=[N:9]2)=[CH:21][CH:22]=1

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 94429TriphosgeneHCID 594904033-(4-methoxybenzyl)-6,7,8,9-tetrahydro-3H-pyrazolo[3,4-c][2,7]naphthyridine

Product 1

HCID 594905863-(4-methoxybenzyl)-8,9-dihydro-3H-pyrazolo[3,4-c][2,7]naphthyridine-7(6H)-carbonyl chloride

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a 1M solution of 3-(4-methoxybenzyl)-6,7,8,9-tetrahydro-3H-pyrazolo[3,4-c][2,7]naphthyridine (0.84 g, 2.88 mmol) in anhydrous THF was added dropwise triphosgene (1.28 g, 4.32 mmol) and triethylamine (0.92 mL, 6.62 mmol). The reaction mixture was stirred at room temperature for 16 hours. The solvent was then removed under reduced pressure to give the desired product, 3-(4-methoxybenzyl)-8,9-dihydro-3H-pyrazolo[3,4-c][2,7]naphthyridine-7(6H)-carbonyl chloride as an orange solid was used immediately in the next step without any further purification.

Workup

  1. customThe solvent was then removed under reduced pressure

Sources & evidence

ORD record
ord-d7aa7f0d610840a993a804cc71401bf4
Source dataset
uspto-grants-2012_09
Patent number
US08263610B2

Reaction notes

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