1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → (S)-2-(benzyloxy)-N'-(4-(4-chlorophenyl)-5-(4-cyanophenyl)-1-((2-methyl-6-(trifluoromethyl)pyridin-3-yl)methyl)-6-oxo-1,6-dihydropyridazin-3-yl)propanehydrazide

HRID 1661109Notes

Reaction equation

HRID 1661109 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[C:13]([NH:14][NH2:15])=[N:12][N:11]([CH2:16][C:17]3[C:18]([CH3:27])=[N:19][C:20]([C:23]([F:26])([F:25])[F:24])=[CH:21][CH:22]=3)[C:10](=[O:28])[C:9]=2[C:29]2[CH:36]=[CH:35][C:32]([C:33]#[N:34])=[CH:31][CH:30]=2)=[CH:4][CH:3]=1.[CH2:37]([O:44][C@@H:45]([CH3:49])[C:46](O)=[O:47])[C:38]1[CH:43]=[CH:42][CH:41]=[CH:40][CH:39]=1.CCN=C=NCCCN(C)C.C1C=CC2N(O)N=NC=2C=1.C(N(C(C)C)CC)(C)C>CCOC(C)=O.C1COCC1>[CH2:37]([O:44][C@@H:45]([CH3:49])[C:46]([NH:15][NH:14][C:13]1[C:8]([C:5]2[CH:6]=[CH:7][C:2]([Cl:1])=[CH:3][CH:4]=2)=[C:9]([C:29]2[CH:30]=[CH:31][C:32]([C:33]#[N:34])=[CH:35][CH:36]=2)[C:10](=[O:28])[N:11]([CH2:16][C:17]2[C:18]([CH3:27])=[N:19][C:20]([C:23]([F:25])([F:26])[F:24])=[CH:21][CH:22]=2)[N:12]=1)=[O:47])[C:38]1[CH:43]=[CH:42][CH:41]=[CH:40][CH:39]=1

Participants

8

Reactant 5

HCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 757711-HydroxybenzotriazoleHCID 81531DiisopropylethylamineHCID 11298298(S)-2-(benzyloxy)propanoic acidHCID 671287294-(5-(4-Chlorophenyl)-6-hydrazinyl-2-((2-methyl-6-(trifluoromethyl)pyridin-3-yl)methyl)-3-oxo-2,3-dihydropyridazin-4-yl)benzonitrile

Product 1

HCID 67129291(S)-2-(benzyloxy)-N'-(4-(4-chlorophenyl)-5-(4-cyanophenyl)-1-((2-methyl-6-(trifluoromethyl)pyridin-3-yl)methyl)-6-oxo-1,6-dihydropyridazin-3-yl)propanehydrazideYield 76.1%

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a round bottom flask was added 4-(5-(4-chlorophenyl)-6-hydrazinyl-2-((2-methyl-6-(trifluoromethyl)pyridin-3-yl)methyl)-3-oxo-2,3-dihydropyridazin-4-yl)benzonitrile (70 mg, 0.1367 mmol), prepared as described in Example 2B, (S)-2-(benzyloxy)propanoic acid (25 mg, 0.1367 mmol), EDAC (30 mg, 0.15 mmol), HOBT (20.3 mg, 0.15 0 mmol), THF (5 ml) and diisopropyl ethyl amine (19.4 mg, 0.15 mmol). The reaction was stirred at rt for 5 hr. After this time, the reaction was diluted with EtOAc (40 ml). The resulting solution was extracted with water (2×20 ml), and saturated NaCl (20 ml). The organic layer was dried over MgSO4, filtered and concentrated. The crude product was purified by silica gel column chromatography (4 g silica gel) eluting with a gradient of 0%-60% EtOAc/Hex to give product (S)-2-(benzyloxy)-N′-(4-(4-chlorophenyl)-5-(4-cyanophenyl)-1-((2-methyl-6-(trifluoromethyl)pyridin-3-yl)methyl)-6-oxo-1,6-dihydropyridazin-3-yl)propanehydrazide as a beige solid (70 mg, 76% yield).

Workup

  1. customprepared
  2. extractionThe resulting solution was extracted with water (2×20 ml), and saturated NaCl (20 ml)
  3. dry with materialThe organic layer was dried over MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe crude product was purified by silica gel column chromatography (4 g silica gel)
  7. washeluting with a gradient of 0%-60% EtOAc/Hex

Sources & evidence

ORD record
ord-9e6e136347c2418a9dc409c14a576c78
Source dataset
uspto-grants-2011_10
Patent number
US08030306B2

Reaction notes

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