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

HRID 1498505Notes

Reaction equation

HRID 1498505 reaction equation
[CH:1]([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)([CH3:3])[CH3:2].[C:24]([O:29][C:30]([CH3:33])([CH3:32])[CH3:31])(=[O:28])[C@@H:25]([CH3:27])O.CO>C(Cl)Cl>[C:30]([O:29][C:24](=[O:28])[C@@H:25]([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]([CH:1]([CH3:3])[CH3:2])[N:5]=[CH:6][N:7]=1)[N:18]=3)[CH3:27])([CH3:33])([CH3:32])[CH3:31]

Participants

5

Reactant 3

HCID 887MethanolHCID 10953655tert-butyl (2R)-2-hydroxypropanoateHCID 1360309202-(2-isopropyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-1,3a-diaza-benzo[e]azulen-8-ol

Product 1

HCID 58204642(S)-2-[2-(2-isopropyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-1,3a-diaza-benzo[e]azulen-8-yloxy]-propionic acid tert-butyl esterYield 62%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

Following the procedures of Example 426, 2-(2-isopropyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-1,3a-diaza-benzo[e]azulen-8-ol 490 and (+)-tert-butyl d-lactate were reacted and the crude product was subjected to flash chromatography (SiO2, gradient 0-7% methanol in DCM) to give (S)-2-[2-(2-Isopropyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-1,3a-diaza-benzo[e]azulen-8-yloxy]-propionic acid tert-butyl ester as a yellow solid (70 mg, 62%). LCMS: RT=3.76 min, [M+H]+=440.

Workup

  1. customwere reacted

Sources & evidence

ORD record
ord-d938f6f6a0254eb790f6d030efc3c555
Source dataset
uspto-grants-2015_12
Patent number
US09198918B2

Reaction notes

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