Triethylamine → Benzyl (2S,3aS,7aS)-1-{(2S)-2-[(tert-butyloxycarbonyl)-amino]-propionyl}-octahydro-1H-indole-2-carboxylate

HRID 1182388Notes

Reaction equation

HRID 1182388 reaction equation
C1(C)C=CC(S(O)(=O)=O)=CC=1.[CH2:12]([O:19][C:20]([C@@H:22]1[CH2:30][C@H:29]2[C@H:24]([CH2:25][CH2:26][CH2:27][CH2:28]2)[NH:23]1)=[O:21])[C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1.C(N(CC)CC)C.[C:38]([O:42][C:43]([NH:45][C@H:46]([C:48](O)=[O:49])[CH3:47])=[O:44])([CH3:41])([CH3:40])[CH3:39]>C(OCC)(=O)C>[C:38]([O:42][C:43]([NH:45][C@@H:46]([CH3:47])[C:48]([N:23]1[C@@H:24]2[C@@H:29]([CH2:28][CH2:27][CH2:26][CH2:25]2)[CH2:30][C@H:22]1[C:20]([O:19][CH2:12][C:13]1[CH:14]=[CH:15][CH:16]=[CH:17][CH:18]=1)=[O:21])=[O:49])=[O:44])([CH3:41])([CH3:40])[CH3:39]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 85082Tert-butoxycarbonylalanineHCID 115465001H-Indole-2-carboxylic acid, octahydro-, phenylmethyl ester, (2S,3aS,7aS)-, 4-methylbenzenesulfonate (1:1)

Product 1

HCID 12993101Benzyl (2S,3aS,7aS)-1-{(2S)-2-[(tert-butyloxycarbonyl)-amino]-propionyl}-octahydro-1H-indole-2-carboxylate

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent

Conditions

Temperature
30 °C

Procedure

200 g of (2S,3aS,7aS)-octahydroindole-2-carboxylic acid benzyl ester para-toluene-sulphonate, 65 ml of triethylamine and 1 litre of ethyl acetate are introduced into a stirred reactor, followed, after stirring for 10 minutes at ambient temperature, by 87 g of N-[tert-butyloxycarbonyl]-(S)-alanine and 175 g of O-(benzotriazol-1-yl)-1,1,3,3-bis(tetra-methylene)uronium hexafluorophosphate. The heterogeneous mixture is then heated at 30° C. for 3 hours whilst stirring well and is then cooled to 0° C. and filtered.

Workup

  1. temperatureis then cooled to 0° C.
  2. filtrationfiltered

Sources & evidence

ORD record
ord-1422a1e937024114bda9729e88d72b49
Source dataset
uspto-grants-2007_10
Patent number
US07288661B2

Reaction notes

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