Diisopropylethylamine → 3-(benzyloxy)-5-((1S)-2-{[tert-butyl(dimethyl)silyl]oxy}-1-methylethoxy)-N-(5-methyl-1,3-thiazol-2-yl)benzamide

HRID 20565

Reaction equation

HRID 20565 reaction equation
CCN(C(C)C)C(C)C.[C:10]1([CH2:16][O:17][C:18]2[CH:19]=[C:20]([CH:24]=[C:25]([O:27][C@@H:28]([CH3:38])[CH2:29][O:30][Si:31]([C:34]([CH3:37])([CH3:36])[CH3:35])([CH3:33])[CH3:32])[CH:26]=2)[C:21]([OH:23])=O)[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.[NH2:63][C:64]1[S:65][C:66]([CH3:69])=[CH:67][N:68]=1>CN(C=O)C>[CH2:16]([O:17][C:18]1[CH:19]=[C:20]([CH:24]=[C:25]([O:27][C@@H:28]([CH3:38])[CH2:29][O:30][Si:31]([C:34]([CH3:36])([CH3:37])[CH3:35])([CH3:32])[CH3:33])[CH:26]=1)[C:21]([NH:63][C:64]1[S:65][C:66]([CH3:69])=[CH:67][N:68]=1)=[O:23])[C:10]1[CH:11]=[CH:12][CH:13]=[CH:14][CH:15]=1

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 3517702-Amino-5-methylthiazoleHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 536296343-[((1S)-2-{[(1,1-dimethylethyl)(dimethyl)silyl]oxy}-1-methylethyl)oxy]-5-[(phenylmethyl)oxy]benzoic acid

Product 1

HCID 593469333-(benzyloxy)-5-((1S)-2-{[tert-butyl(dimethyl)silyl]oxy}-1-methylethoxy)-N-(5-methyl-1,3-thiazol-2-yl)benzamide

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

DIPEA (7.5 mL) was added to a suspension of 3-{(phenylmethyl)oxy}-5-((1S)-2-{[tert-butyl(dimethyl)silyl]oxy}-1-methylethoxy)benzoic acid (4.5 g, 0.011 mol), HATU (8.6 g, 0.023 mol) and 2-amino-5-methylthiazole (2.46 g, 0.022 mol) in DMF (70 mL). The resulting mixture was stirred at ambient temperature for 72 hours. The DMF was removed in vacuo. Water (100 mL) was added and the mixture extracted with ethyl acetate (3×50 mL). The extracts were combined and washed with brine (100 mL). The solution was dried (MgSO4), filtered, and evaporated in vacuo to give the crude product which was chromatographed on silica, eluting with a gradient of 50-100% ethyl acetate in isohexane, to give the desired compound. (1.7 g).

Workup

  1. customThe DMF was removed in vacuo
  2. additionWater (100 mL) was added
  3. extractionthe mixture extracted with ethyl acetate (3×50 mL)
  4. washwashed with brine (100 mL)
  5. dry with materialThe solution was dried (MgSO4)
  6. filtrationfiltered
  7. customevaporated in vacuo
  8. customto give the crude product which
  9. customwas chromatographed on silica
  10. washeluting with a gradient of 50-100% ethyl acetate in isohexane

Sources & evidence

ORD record
ord-51c3d8d5755b4a798dcbc43b60381424
Source dataset
uspto-grants-2010_06
Patent number
US07745475B2

Linked notes

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