Acetohydrazide → Acetic acid N'-(2-{4,5-dimethyl-6-[4-(5-trifluoromethyl-pyridin-2-yl)-piperazin-1-yl]-pyridazin-3-yl}-acetyl)-hydrazide

HRID 1480013Notes

Reaction equation

HRID 1480013 reaction equation
[C:1]([NH:4][NH2:5])(=[O:3])[CH3:2].C(N(C(C)C)CC)(C)C.[CH3:15][C:16]1[C:21]([CH3:22])=[C:20]([N:23]2[CH2:28][CH2:27][N:26]([C:29]3[CH:34]=[CH:33][C:32]([C:35]([F:38])([F:37])[F:36])=[CH:31][N:30]=3)[CH2:25][CH2:24]2)[N:19]=[N:18][C:17]=1[CH2:39][C:40](O)=[O:41].C1C=CC2N(O)N=NC=2C=1.CN(C(ON1N=NC2C=CC=CC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F>CN(C=O)C>[CH3:15][C:16]1[C:21]([CH3:22])=[C:20]([N:23]2[CH2:28][CH2:27][N:26]([C:29]3[CH:34]=[CH:33][C:32]([C:35]([F:38])([F:37])[F:36])=[CH:31][N:30]=3)[CH2:25][CH2:24]2)[N:19]=[N:18][C:17]=1[CH2:39][C:40]([NH:5][NH:4][C:1](=[O:3])[CH3:2])=[O:41]

Participants

7

Reactant 5

HCID 14039AcetohydrazideHCID 757711-HydroxybenzotriazoleHCID 81531DiisopropylethylamineHCID 2733084Methanaminium, N-((1H-benzotriazol-1-yloxy)(dimethylamino)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 59191538{4,5-Dimethyl-6-[4-(5-trifluoromethyl-pyridin-2-yl)-piperazin-1-yl]-pyridazin-3-yl}-acetic acid

Product 1

HCID 59191525Acetic acid N'-(2-{4,5-dimethyl-6-[4-(5-trifluoromethyl-pyridin-2-yl)-piperazin-1-yl]-pyridazin-3-yl}-acetyl)-hydrazideYield 90.2%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

Acetic acid hydrazide (20.6 mg, 0.28 mmol) is added to a round-bottom flask under N2 followed by DMF (5 mL). Diisopropylethylamine (0.25 mL) is added and the reaction is stirred for 30 min. {4,5-Dimethyl-6-[4-(5-trifluoromethyl-pyridin-2-yl)-piperazin-1-yl]-pyridazin-3-yl}-acetic acid (110 mg, 0.28 mmol) is added and the reaction is stirred for 1 h. HOBT (42 mg, 0.311 mmol) and HBTU (116.8 mg, 0.31 mmol) are added and the reaction is allowed to stir for 16 h. The crude reaction mixture is purified via flash chromatography on silica gel (0-30% methanol in dichloromethane) to afford the title compound (114 mg, 90%).

Workup

  1. additionis added
  2. stirringto stir for 16 h
  3. customThe crude reaction mixture
  4. customis purified via flash chromatography on silica gel (0-30% methanol in dichloromethane)

Sources & evidence

ORD record
ord-e0e1a4d8efac4a418fdab8af94ec556c
Source dataset
uspto-grants-2016_08
Patent number
US09409871B2

Reaction notes

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