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Diethyl Pyrocarbonate → 1-[(5-chloro-2-thienyl)sulfonyl-ethyl-amino]-N-[[2-methoxy-6-[4-(trifluoromethyl)phenyl]-4-pyridyl]methyl]cyclopropanecarboxamide

HRID 1479879
Notes
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Reaction equation

HRID 1479879 reaction equation
[Cl:1][C:2]1[S:6][C:5]([S:7]([N:10]([CH2:17][CH3:18])[C:11]2([C:14]([OH:16])=O)[CH2:13][CH2:12]2)(=[O:9])=[O:8])=[CH:4][CH:3]=1.CCOC(OC(OCC)=O)=O.[CH3:30][O:31][C:32]1[CH:37]=[C:36]([CH2:38][NH2:39])[CH:35]=[C:34]([C:40]2[CH:45]=[CH:44][C:43]([C:46]([F:49])([F:48])[F:47])=[CH:42][CH:41]=2)[N:33]=1>C1COCC1>[Cl:1][C:2]1[S:6][C:5]([S:7]([N:10]([CH2:17][CH3:18])[C:11]2([C:14]([NH:39][CH2:38][C:36]3[CH:35]=[C:34]([C:40]4[CH:41]=[CH:42][C:43]([C:46]([F:47])([F:48])[F:49])=[CH:44][CH:45]=4)[N:33]=[C:32]([O:31][CH3:30])[CH:37]=3)=[O:16])[CH2:12][CH2:13]2)(=[O:8])=[O:9])=[CH:4][CH:3]=1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 3051Diethyl PyrocarbonateHCID 903841961-[(5-Chloro-2-thienyl)sulfonyl-ethyl-amino]cyclopropanecarboxylic acidHCID 90390870[2-Methoxy-6-[4-(trifluoromethyl)phenyl]-4-pyridyl]methanamine

Product 1

HCID 903902871-[(5-chloro-2-thienyl)sulfonyl-ethyl-amino]-N-[[2-methoxy-6-[4-(trifluoromethyl)phenyl]-4-pyridyl]methyl]cyclopropanecarboxamideYield 26%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

A solution of acid 18 (0.3 g, 0.97 mmol) in THF (15 mL) was added with DEPC (0.19 mL, 1.3 mol eq) and the mixture was stirred at room temperature several minutes. Then [2-methoxy-6-[4-(trifluoromethyl)phenyl]-4-pyridyl]methanamine 27I (0.22 g, 1.1 mol eq) and a catalytic amount of TEA were added, then the reaction mixture was stirred at room temperature overnight. The solvent was removed under reduced pressure, water was added to the residue that is extracted with EtOAc (3×30 mL) and washed with brine (1×30 mL). The separated organic phase was dried over Na2SO4, evaporated to dryness and the residue was purified by flash chromatography (1/1 EtOAc/Petroleum ether) to afford a white solid (110 mg) after crystallization from ethyl ether. Yield=26%. 1HNMR (DMSO, 400 MHz) δ 1.21 (t, 5H, J=6.2), 1.41 (m, 2H), 3.54 (m, 2H), 3.94 (s, 3H), 4.18 (bs, 2H), 6.70 (s, 1H), 7.25 (d, 1H, J=2.1), 7.57 (d, 2H, J=2.3), 7.84 (d, 2H, J=8), 8.27 (m, 3H). [M+1] 574.66 (C24H23ClF3N3O4S2 requires 574.04).

Workup

  1. stirringthe reaction mixture was stirred at room temperature overnight
  2. customThe solvent was removed under reduced pressure, water
  3. additionwas added to the residue that
  4. extractionis extracted with EtOAc (3×30 mL)
  5. washwashed with brine (1×30 mL)
  6. dry with materialThe separated organic phase was dried over Na2SO4
  7. customevaporated to dryness
  8. customthe residue was purified by flash chromatography (1/1 EtOAc/Petroleum ether)

Sources & evidence

ORD record
ord-9a21d0cf762042e3b00bd2e929f1a6d0
Source dataset
uspto-grants-2016_08
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09409864B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes