Acetic Acid → 1,1-Dioxo-3-butyl-3-ethyl-5-phenyl-7-bromo-8-carboxymethoxy-2,3,4,5-tetrahydro-1,5-benzothiazepine

HRID 458914Notes

Reaction equation

HRID 458914 reaction equation
[O:1]=[S:2]1(=[O:33])[C:8]2[CH:9]=[C:10]([O:14][CH2:15][C:16]([O:18]CC)=[O:17])[C:11]([Br:13])=[CH:12][C:7]=2[N:6]([C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)[CH2:5][C:4]([CH2:29][CH2:30][CH2:31][CH3:32])([CH2:27][CH3:28])[CH2:3]1.[OH-].[Na+].C(O)(=O)C>C(O)C>[O:33]=[S:2]1(=[O:1])[C:8]2[CH:9]=[C:10]([O:14][CH2:15][C:16]([OH:18])=[O:17])[C:11]([Br:13])=[CH:12][C:7]=2[N:6]([C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)[CH2:5][C:4]([CH2:29][CH2:30][CH2:31][CH3:32])([CH2:27][CH3:28])[CH2:3]1

Participants

5

Reactant 3

HCID 176Acetic AcidHCID 14798Sodium HydroxideHCID 223931181,1-Dioxo-3-butyl-3-ethyl-5-phenyl-7-bromo-8-ethoxycarbonylmethoxy-2,3,4,5-tetrahydro-1,5-benzothiazepine

Product 1

HCID 223931311,1-Dioxo-3-butyl-3-ethyl-5-phenyl-7-bromo-8-carboxymethoxy-2,3,4,5-tetrahydro-1,5-benzothiazepineYield 90%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

1,1-Dioxo-3-butyl-3-ethyl-5-phenyl-7-bromo-8-ethoxycarbonylmethoxy-2,3,4,5-tetrahydro-1,5-benzothiazepine (Method 8; 0.34 g) and sodium hydroxide (0.3 g) were dissolved in ethanol and the mixture was heated to reflux for 1 hour. Acetic acid (1 ml) was added and the solvent was removed at reduced pressure. The residue was partitioned between DCM/H2O and the organic layer was separated and dried. Trituration of the residue with n-hexane gave the title compound 0.29 g (90%) as a solid. NMR (500 MHz) 0.7–0.8 (m, 6H), 1.0–1.7 (m, 8H), 3.1–3.2 (m, 2H), 3.6 (brs, 2H), 4.6 (s, 2H), 6.9–7.1 (m, 4H), 7.2 (m, 2H), 7.5 (s, 1H).

Workup

  1. temperaturethe mixture was heated
  2. temperatureto reflux for 1 hour
  3. customthe solvent was removed at reduced pressure
  4. customThe residue was partitioned between DCM/H2O
  5. customthe organic layer was separated
  6. customdried

Sources & evidence

ORD record
ord-7be1a40e571c438aac97bde6c9374d40
Source dataset
uspto-grants-2007_03
Patent number
US07192945B2

Reaction notes

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