3,5-Dichloroaniline → HCID 12213510, compound

HRID 1062650Notes

Reaction equation

HRID 1062650 reaction equation
ClC1C(Cl)=NC2C(C=1)=CC=CC=2.[NH2:13][C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1.C(C([O-])=O)#CC([O-])=O.ClC1C=C(C=C(Cl)C=1)N.[C:37]([C:43]([O:45][CH3:46])=[O:44])#[C:38][C:39]([O:41][CH3:42])=[O:40]>>[NH:13](/[C:38](=[CH:37]\[C:43]([O:45][CH3:46])=[O:44])/[C:39]([O:41][CH3:42])=[O:40])[C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1

Participants

5

Reactant 4

HCID 122813,5-DichloroanilineHCID 12980Dimethyl acetylenedicarboxylateHCID 109872152,3-dichloroquinolineHCID 131725207HCID 131725207, compound

Product 1

HCID 12213510HCID 12213510, compoundYield 80%

Procedure

The dichloroquinoline (represented by 4) may be synthesized as described by Heindel, N. D., et al., “CYCLIZATION OF ANILINE-ACETYLENE DICARBOXYLATE ADDUCTS: A MODIFIED CONRAD-LIMPACH METHOD FOR THE SYNTHESIS OF POTENTIAL ANTIMALARIALS,” J. Med. Chem. 11 1218–1221 (1968). 3,5-Dichloroaniline, (1) a dihaloaniline, is refluxed with dimethyl acetylenedicarboxylate to produce substituted diester (3) in approximately 80% yield. Upon heating in diphenyl ether, the fumarate ester under goes cyclization to the quinoline carboxylate (4). The ester (4) can be readily aminated to the tosylamine (5) as described by Harrison, B. L., et al., “4-[(CARBOXYMETHYL)OXYL]-AND 4-[(CARBOXYMETHYL)AMINO]-5,7-DICHLOROQUINOLINE-2-CARBOXYLIC ACID: NEW ANTAGONISTS OF THE STRYCHNINE-INSENSITIVE GLYCINE BINDING SITE ON THE N-METHYL-D-ASPARTATE RECEPTOR COMPLEX,” J. Med. Chem. 33 3130–3132 (1990). The tosylamine (5) was acylated with diphenylcarbamoyl chloride (6), followed by hydrolysis, to form the diphenyl urea derivative (7).

Sources & evidence

ORD record
ord-979a98b74de0443c8c28fd8f8e97ae8b
Source dataset
uspto-grants-2005_11
Patent number
US06962930B1

Reaction notes

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