Diisopropylethylamine → 3-[4-(azetidin-1-ylcarbonyl)-2-fluorophenoxy]-5-((1S)-2-{[tert-butyl(dimethyl)silyl]oxy}-1-methylethoxy)-N-(3-methyl-1,2,4-thiadiazol-5-yl)benzamide

HRID 20582

Reaction equation

HRID 20582 reaction equation
CCN(C(C)C)C(C)C.[N:10]1([C:14]([C:16]2[CH:43]=[CH:42][C:19]([O:20][C:21]3[CH:22]=[C:23]([CH:27]=[C:28]([O:30][C@@H:31]([CH3:41])[CH2:32][O:33][Si:34]([C:37]([CH3:40])([CH3:39])[CH3:38])([CH3:36])[CH3:35])[CH:29]=3)[C:24]([OH:26])=O)=[C:18]([F:44])[CH:17]=2)=[O:15])[CH2:13][CH2:12][CH2:11]1.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.[NH2:69][C:70]1[S:74][N:73]=[C:72]([CH3:75])[N:71]=1>CN(C=O)C.O>[N:10]1([C:14]([C:16]2[CH:43]=[CH:42][C:19]([O:20][C:21]3[CH:22]=[C:23]([CH:27]=[C:28]([O:30][C@@H:31]([CH3:41])[CH2:32][O:33][Si:34]([C:37]([CH3:39])([CH3:40])[CH3:38])([CH3:36])[CH3:35])[CH:29]=3)[C:24]([NH:69][C:70]3[S:74][N:73]=[C:72]([CH3:75])[N:71]=3)=[O:26])=[C:18]([F:44])[CH:17]=2)=[O:15])[CH2:11][CH2:12][CH2:13]1

Participants

7

Reactant 4

HCID 81531DiisopropylethylamineHCID 3506395-Amino-3-methyl-1,2,4-thiadiazoleHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 593469093-[4-(azetidin-1-ylcarbonyl)-2-fluorophenoxy]-5-((1S)-2-{[tert-butyl(dimethyl)silyl]oxy}-1-methylethoxy)benzoic acid

Product 1

HCID 593468823-[4-(azetidin-1-ylcarbonyl)-2-fluorophenoxy]-5-((1S)-2-{[tert-butyl(dimethyl)silyl]oxy}-1-methylethoxy)-N-(3-methyl-1,2,4-thiadiazol-5-yl)benzamideYield 99.5%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

DIPEA (0.8 mL, 4.77 mmol) was added to a suspension of 3-[4-(azetidin-1-ylcarbonyl)-2-fluorophenoxy]-5-((1S)-2-{[tert-butyl(dimethyl)silyl]oxy}-1-methylethoxy)benzoic acid (800 mg, 1.59 mmol), HATU (787 mg, 2.07 mmol) and 5-amino-3-methyl-1,2,4 thiadiazole (549 mg, 4.77 mmol) in DMF (110 mL). The resulting mixture was stirred at ambient temperature for 16 hours, water (150 mL) was added and the mixture extracted with ethyl acetate. The extracts were combined, washed with brine, dried (MgSO4), filtered and evaporated in vacuo to give the crude product which was chromatographed on silica, eluting with 75% ethyl acetate in isohexane, to give the desired compound (950 mg).

Workup

  1. extractionthe mixture extracted with ethyl acetate
  2. washwashed with brine
  3. dry with materialdried (MgSO4)
  4. filtrationfiltered
  5. customevaporated in vacuo
  6. customto give the crude product which
  7. customwas chromatographed on silica
  8. washeluting with 75% ethyl acetate in isohexane

Sources & evidence

ORD record
ord-0a500e55f03744d7a6fde67ddd75244f
Source dataset
uspto-grants-2010_06
Patent number
US07745475B2

Linked notes

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