Triethylamine → HCID 14579784, compound

HRID 1534220Notes

Reaction equation

HRID 1534220 reaction equation
[CH3:1][O:2][C:3]1[CH:24]=[CH:23][C:6]([CH2:7][C:8]2[O:9][C:10]3[C:17]([F:18])=[CH:16][C:15]([CH2:19][CH2:20][CH3:21])=[C:14]([OH:22])[C:11]=3[C:12]=2[CH3:13])=[CH:5][CH:4]=1.Cl[C:26]([O:28][CH2:29][CH3:30])=[O:27].C(N(CC)CC)C>O1CCCC1>[CH3:1][O:2][C:3]1[CH:4]=[CH:5][C:6]([CH2:7][C:8]2[O:9][C:10]3[C:17]([F:18])=[CH:16][C:15]([CH2:19][CH2:20][CH3:21])=[C:14]([O:22][C:26]([O:28][CH2:29][CH3:30])=[O:27])[C:11]=3[C:12]=2[CH3:13])=[CH:23][CH:24]=1

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 10928Ethyl chloroformateHCID 14570892HCID 14570892, compound

Product 1

HCID 14579784HCID 14579784, compoundYield 80%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

A solution of 2-(p-methoxybenzyl)-3-methyl-4-hydroxy-5-propyl-7-fluorobenzofuran (0.10 gm, 0.3 mmoles), ethyl chloroformate (0.1 mL) and triethylamine (0.7 mL) in tetrahydrofuran (15 mL) was stirred at room temperature overnight. The volatiles were removed in vacuo. The residue was purified by chromatography on silica gel and eluted with 15% ethylacetate in hexane to yield 90 mg (80%) of 2-(p-methoxybenzyl)-3-methyl-4-ethoxycarbonyloxy-5-propyl-7-fluorobenzofuran, mp. 85°-88° C.

Workup

  1. customThe volatiles were removed in vacuo
  2. customThe residue was purified by chromatography on silica gel
  3. washeluted with 15% ethylacetate in hexane

Sources & evidence

ORD record
ord-36ea50c21b684a239d18a1d7e731494b
Source dataset
uspto-grants-1992_02
Patent number
US05087638

Reaction notes

Loading…