Hydrochloric Acid → HCID 68161327, compound

HRID 1257299Notes

Reaction equation

HRID 1257299 reaction equation
[CH2:1]([O:8][C:9]([NH:11][CH:12]([CH2:16][C:17]1[CH:22]=[CH:21][C:20]([N+:23]([O-:25])=[O:24])=[CH:19][CH:18]=1)[C:13]([OH:15])=[O:14])=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C(=O)([O-])[O-].[K+].[K+].Br[CH2:33][CH2:34][CH2:35][CH2:36][CH2:37][CH2:38][CH2:39][CH2:40][CH2:41][CH2:42][CH2:43][CH2:44][CH2:45][CH2:46][CH2:47][CH2:48][CH2:49][CH3:50].Cl>CN1C(=O)CCC1>[CH2:50]([O:14][C:13](=[O:15])[CH:12]([NH:11][C:9]([O:8][CH2:1][C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1)=[O:10])[CH2:16][C:17]1[CH:18]=[CH:19][C:20]([N+:23]([O-:25])=[O:24])=[CH:21][CH:22]=1)[CH2:49][CH2:48][CH2:47][CH2:46][CH2:45][CH2:44][CH2:43][CH2:42][CH2:41][CH2:40][CH2:39][CH2:38][CH2:37][CH2:36][CH2:35][CH2:34][CH3:33]

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 82181-BromooctadecaneHCID 11430Potassium CarbonateHCID 2876384HCID 2876384, compound

Product 1

HCID 68161327HCID 68161327, compoundYield 62%

Reagents, catalysts & solvents 1

HCID 13387N-methyl-2-pyrrolidoneSolvent

Conditions

Temperature
20 °C

Procedure

To a mixture of 2-benzyloxycarbonylamino-3-(4-nitro-phenyl)-propionic acid (400 g), potassium carbonate (192.5 g) in NMP (1460 ml) maintained at 20° C., was added dropwise 1-Bromo octadecane (425 g). The reaction mixture was allowed to slowly come to room temperature and further stirred for 24 hours. The reaction mixture was then poured onto ice water and the pH was adjusted to 7 with dilute HCl. The solid was filtered, dried and purified by column chromatography using hexane:ethyl acetate (95:5) as an eluant to yield pure 2-benzyloxycarbonylamino-3-(4-nitro-phenyl)-propionic acid stearyl ester (430 g) as a white powder with a melting point of 56-59° C. The product was further characterized by IH NMR (CDCl3) δ 0.90 (t, 3H, CH3), 1.30 (m, 30H, 15X CH2), 1.60 (m, 2H, CH2), 3.05-3.25 (m, 2H, CH2), 4.20 (m, 2H, CH2), 4.65 (m, 1H, CH), 5.15 (m, 2H, CH2), 5.40 (d, 1H, NH), 7.30 (m, 54H, Ar), 7.45 (d, 2H, Ar), 8.15 (d, 2H, Ar)

Workup

  1. customto slowly come to room temperature
  2. additionThe reaction mixture was then poured onto ice water
  3. filtrationThe solid was filtered
  4. customdried
  5. custompurified by column chromatography

Sources & evidence

ORD record
ord-58a6d6365917486d82d5ed7e7d4887a7
Source dataset
uspto-grants-2013_06
Patent number
US08461372B2

Reaction notes

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