Trifluoroacetic acid → HCID 58025821, compound

HRID 1046943Notes

Reaction equation

HRID 1046943 reaction equation
C(O[C:6]([NH:8][NH:9][C:10]([C:12]1[CH:13]=[N:14][C:15]([CH3:18])=[CH:16][CH:17]=1)=[S:11])=[O:7])(C)(C)C.C(OC(NNC(=O)C1C=CC(F)=CC=1)=O)(C)(C)C.C(O)(C(F)(F)F)=O.CCN(C(C)C)C(C)C.[F:53][CH:54]([F:64])[O:55][C:56]1[CH:63]=[CH:62][CH:61]=[CH:60][C:57]=1[CH:58]=O.[F:65][C:66]1[CH:74]=[C:73]([F:75])[CH:72]=[C:71]([F:76])[C:67]=1C(Cl)=O>C(Cl)Cl>[F:53][CH:54]([F:64])[O:55][C:56]1[CH:63]=[CH:62][CH:61]=[CH:60][C:57]=1[CH:58]1[N:8]([C:6]([C:67]2[C:66]([F:65])=[CH:74][C:73]([F:75])=[CH:72][C:71]=2[F:76])=[O:7])[N:9]=[C:10]([C:12]2[CH:13]=[N:14][C:15]([CH3:18])=[CH:16][CH:17]=2)[S:11]1

Participants

8

Reactant 6

HCID 6422Trifluoroacetic acidHCID 81531DiisopropylethylamineHCID 1448952,4,6-Trifluorobenzoyl chlorideHCID 27369842-(Difluoromethoxy)benzaldehydeHCID 67279032tert-Butyl 2-(4-fluorobenzoyl)hydrazine-1-carboxylateHCID 86637598HCID 86637598, compound

Product 1

HCID 58025821HCID 58025821, compound

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

N′-(6-Methyl-pyridine-3-carbothioyl)-hydrazinecarboxylic acid tert-butyl ester (0.1 mmol) prepared as described in example 3 for N′-(4-fluoro-benzoyl)-hydrazinecarboxylic acid tert-butyl ester, is treated with TFA (1 mmol) in dry CH2Cl2 (1 mL) at room temperature for 30 minutes. Solvent is removed and the residue is dissolved in dry CH2Cl2 (1 mL). DIEA (0.287 mmol) is added to the solution and the mixture is treated with 2-difluoromethoxy-benzaldehyde (0.12 mmol) in the presence of 4 Å molecular sieves. 2,4,6-Trifluorobenzoyl chloride (0.15 mmol) is added after 5 minutes. The mixture is kept at ambient temperature for 16 hours and purified by preparative HPLC (20-100% MeCN/H2O) to yield [2-(2-difluoromethoxy-phenyl)-5-(6-methyl-pyridin-3-yl)-[1,3,4]thiadiazol-3-yl]-(2,4,6-trifluoro-phenyl)-methanone: 1H NMR (400 MHz, CDCl3) 8.71 (d, J=2.1 Hz, 1H), 7.81 (dd, J1=8.2 Hz, J2=2.2 Hz, 1H), 7.53 (s, 1H), 7.36-7.4 (m, 2H), 7.26 (d, J=8.1 Hz, 2H), 7.18 (d, J=8.3 Hz, 1H), 6.78 (t, J=8.3 Hz, 2H), 6.67 (dd, J1=75.0 Hz, J2=71.7 Hz, 1H), 2.64 (s, 3H); LC/MS (ES+): (M+1) 480.1.

Workup

  1. customSolvent is removed
  2. dissolutionthe residue is dissolved in dry CH2Cl2 (1 mL)
  3. custompurified by preparative HPLC (20-100% MeCN/H2O)

Sources & evidence

ORD record
ord-877c62aef0df40468ee919ee45fabe54
Source dataset
uspto-grants-2013_10
Patent number
US08569345B2

Reaction notes

Loading…