Acetic Anhydride → 1-Nitro-5-(p-chlorophenyl)-6-acetyl-5,6-dihydropyrazolo[1,5-c]quinazoline

HRID 1659343Notes

Reaction equation

HRID 1659343 reaction equation
[N+:1]([C:4]1[CH:5]=[N:6][N:7]2[C:16]=1[C:15]1[CH:14]=[CH:13][CH:12]=[CH:11][C:10]=1[NH:9][CH:8]2[C:17]1[CH:22]=[CH:21][C:20]([Cl:23])=[CH:19][CH:18]=1)([O-:3])=[O:2].[C:24](OC(=O)C)(=[O:26])[CH3:25]>>[N+:1]([C:4]1[CH:5]=[N:6][N:7]2[C:16]=1[C:15]1[CH:14]=[CH:13][CH:12]=[CH:11][C:10]=1[N:9]([C:24](=[O:26])[CH3:25])[CH:8]2[C:17]1[CH:18]=[CH:19][C:20]([Cl:23])=[CH:21][CH:22]=1)([O-:3])=[O:2]

Participants

3

Reactant 2

HCID 7918Acetic AnhydrideHCID 1357377761-Nitro-5-(p-chlorophenyl)-5,6-dihydropyrazolo[1,5-c]quinazoline

Product 1

HCID 131756771-Nitro-5-(p-chlorophenyl)-6-acetyl-5,6-dihydropyrazolo[1,5-c]quinazolineYield 95%

Procedure

1-Nitro-5-(p-chlorophenyl)-5,6-dihydropyrazolo[1,5-c]quinazoline is treated with acetic anhydride as described in Example 27 to give 1-nitro-5-(p-chlorophenyl)-6-acetyl-5,6-dihydropyrazolo[1,5-c]quinazoline with a yield of 95%. M.p.: 183°-184° C.

Sources & evidence

ORD record
ord-3a70e229aad94e43b4400cda1b8b49d4
Source dataset
uspto-grants-1981_12
Patent number
US04303660

Reaction notes

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