Methanol → (S)-2-{2-[2-(2,2,2-Trifluoro-ethyl)-2H-[1,2,4]triazol-3-yl]-4,5-dihydro-6-oxa-1,3a-diaza-benzo[e]azulen-8-yloxy}-butyric acid tert-butyl ester

HRID 886499Notes

Reaction equation

HRID 886499 reaction equation
[F:1][C:2]([F:25])([F:24])[CH2:3][N:4]1[C:8]([C:9]2[N:18]=[C:17]3[N:11]([CH2:12][CH2:13][O:14][C:15]4[CH:22]=[C:21]([OH:23])[CH:20]=[CH:19][C:16]=43)[CH:10]=2)=[N:7][CH:6]=[N:5]1.COC(=O)C(O)C(C)C.[C:35]([O:39][C:40](=[O:45])[C@@H:41](O)[CH2:42][CH3:43])([CH3:38])([CH3:37])[CH3:36].CO>C(OCC)(=O)C>[C:35]([O:39][C:40](=[O:45])[C@@H:41]([O:23][C:21]1[CH:20]=[CH:19][C:16]2[C:17]3[N:11]([CH2:12][CH2:13][O:14][C:15]=2[CH:22]=1)[CH:10]=[C:9]([C:8]1[N:4]([CH2:3][C:2]([F:24])([F:1])[F:25])[N:5]=[CH:6][N:7]=1)[N:18]=3)[CH2:42][CH3:43])([CH3:38])([CH3:37])[CH3:36]

Participants

6

Reactant 4

HCID 887MethanolHCID 552631Methyl 2-hydroxy-3-methylbutanoateHCID 13237360tert-Butyl (2S)-2-hydroxybutanoateHCID 1360309182-[2-(2,2,2-trifluoro-ethyl)-2H-[1,2,4]triazol-3-yl]-4,5-dihydro-6-oxa-1,3a-diaza-benzo[e]azulen-8-ol

Product 1

HCID 58204893(S)-2-{2-[2-(2,2,2-Trifluoro-ethyl)-2H-[1,2,4]triazol-3-yl]-4,5-dihydro-6-oxa-1,3a-diaza-benzo[e]azulen-8-yloxy}-butyric acid tert-butyl ester

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent

Procedure

Following the procedure of Example 426, 2-[2-(2,2,2-trifluoro-ethyl)-2H-[1,2,4]triazol-3-yl]-4,5-dihydro-6-oxa-1,3a-diaza-benzo[e]azulen-8-ol, 2-hydroxy-3-methyl-butyric acid methyl ester and (S)-2-hydroxy-butyric acid tert-butyl ester were reacted and the crude product was subjected to flash chromatography (SiO2, gradient 0-10% methanol in ethyl acetate) to give (S)-2-{2-[2-(2,2,2-Trifluoro-ethyl)-2H-[1,2,4]triazol-3-yl]-4,5-dihydro-6-oxa-1,3a-diaza-benzo[e]azulen-8-yloxy}-butyric acid tert-butyl ester as a yellow oil contaminated with triphenylphosphine oxide, no further purification was undertaken. LCMS: RT=4.05 min, [M+H]+=494

Workup

  1. customwere reacted

Sources & evidence

ORD record
ord-3964aa0d4cad4a7483b292198b53c14d
Source dataset
uspto-grants-2012_08
Patent number
US08242104B2

Reaction notes

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