Tributylamine → ethyl alpha-acetyl-2-chloro-5-[4-(difluoromethyl)-4,5-dihydro-3-methyl-5-oxo-1H-1,2,4-triazol-1-yl]-4-fluorobenzenepropanoate

HRID 636839Notes

Reaction equation

HRID 636839 reaction equation
[Cl:1][C:2]1[C:7](I)=[CH:6][C:5]([N:9]2[C:13](=[O:14])[N:12]([CH:15]([F:17])[F:16])[C:11]([CH3:18])=[N:10]2)=[C:4]([F:19])[CH:3]=1.[OH:20][CH:21]([CH3:29])[C:22](=[CH2:28])[C:23]([O:25][CH2:26][CH3:27])=[O:24].C(N(CCCC)CCCC)CCC>[Pd+2]>[C:21]([CH:22]([CH2:28][C:7]1[CH:6]=[C:5]([N:9]2[C:13](=[O:14])[N:12]([CH:15]([F:17])[F:16])[C:11]([CH3:18])=[N:10]2)[C:4]([F:19])=[CH:3][C:2]=1[Cl:1])[C:23]([O:25][CH2:26][CH3:27])=[O:24])(=[O:20])[CH3:29]

Participants

5

Reactant 3

HCID 7622TributylamineHCID 10855587Butanoic acid, 3-hydroxy-2-methylene-, ethyl esterHCID 155100251-(4-chloro-2-fluoro-5-iodophenyl)-4-difluoromethyl-4,5-dihydro-3-methyl-5-oxo-1H-1,2,4-triazole

Product 1

HCID 21255956ethyl alpha-acetyl-2-chloro-5-[4-(difluoromethyl)-4,5-dihydro-3-methyl-5-oxo-1H-1,2,4-triazol-1-yl]-4-fluorobenzenepropanoateYield 49.6%

Reagents, catalysts & solvents 1

HCID 105144Allyl(1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene)chloropalladium(II)Catalyst

Procedure

This compound was prepared in the manner of Example 6, with 1.03 grams (0.0025 mole—1.0 equiv.) of 1-(4-chloro-2-fluoro-5-iodophenyl)-4-difluoromethyl-4,5-dihydro-3-methyl-5-oxo-1H-1,2,4-triazole, 0.365 gram (0.0025 mole—1.0 equiv.) of ethyl 3-hydroxy-2-methylenebutanoate, 1.6 grams (0.0084 mole—3.36 equiv.) of tributylamine, and 0.062 gram (0.000029 mole—0.01 equiv.) of 5% palladium(II) on carbon as reagents. A yield of 0.52 gram of 98% pure ethyl α-acetyl-2-chloro-5-[4-(difluoromethyl)-4,5-dihydro-3-methyl-5-oxo-1H-1,2,4-triazol-1-yl]-4-fluorobenzenepropanoate (49.6% yield) was obtained.

Sources & evidence

ORD record
ord-6c8ff355b5584be0a0e574062102593c
Source dataset
uspto-grants-2001_02
Patent number
US06194583B1

Reaction notes

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