Synephrine → N-(4-chlorobenzyl)-2-{[[2-hydroxy-2-(4-hydroxyphenyl)ethyl](methyl)amino]methyl}-3,4-dimethyl-7-oxo-4,7-dihydrothieno[3,2-b]pyridine-6-carboxamide

HRID 23619

Reaction equation

HRID 23619 reaction equation
[Cl:1][C:2]1[CH:25]=[CH:24][C:5]([CH2:6][NH:7][C:8]([C:10]2[C:11](=[O:23])[C:12]3[S:19][C:18]([CH2:20]Cl)=[C:17]([CH3:22])[C:13]=3[N:14]([CH3:16])[CH:15]=2)=[O:9])=[CH:4][CH:3]=1.[CH3:26][NH:27][CH2:28][CH:29]([OH:37])[C:30]1[CH:31]=[CH:32][C:33]([OH:36])=[CH:34][CH:35]=1.C(N(C(C)C)CC)(C)C>CN(C=O)C.O>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([CH2:6][NH:7][C:8]([C:10]2[C:11](=[O:23])[C:12]3[S:19][C:18]([CH2:20][N:27]([CH2:28][CH:29]([OH:37])[C:30]4[CH:35]=[CH:34][C:33]([OH:36])=[CH:32][CH:31]=4)[CH3:26])=[C:17]([CH3:22])[C:13]=3[N:14]([CH3:16])[CH:15]=2)=[O:9])=[CH:24][CH:25]=1

Participants

6

Reactant 3

HCID 7172SynephrineHCID 81531DiisopropylethylamineHCID 22574363N-(4-chlorobenzyl)-2-(chloromethyl)-3,4-dimethyl-7-oxo-4,7-dihydrothieno[3,2-b]pyridine-6-carboxamide

Product 1

HCID 10289450N-(4-chlorobenzyl)-2-{[[2-hydroxy-2-(4-hydroxyphenyl)ethyl](methyl)amino]methyl}-3,4-dimethyl-7-oxo-4,7-dihydrothieno[3,2-b]pyridine-6-carboxamideYield 77.6%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Conditions

Temperature
60 °C

Procedure

A mixture of N-(4-chlorobenzyl)-2-(chloromethyl)-3,4-dimethyl-7-oxo-4,7-dihydrothieno[3,2-b]pyridine-6-carboxamide (48 mg, 0.12 mmol), synephrine (Aldrich, 30 mg, 0.18 mmol) and diisopropylethylamine (31 μL, 0.18 mmol) in dry DMF (2.0 mL) was heated to 60° C., becoming a solution. The reaction was stirred for 3 hours at that temperature. After cooling to room temperature, the solution was diluted with water (5 mL). The resulting milky suspension was stirred vigorously for 30 minutes, and then left standing overnight at room temp. The mixture was filtered, and the collected solid was washed with water and dried in vacuo, leaving a white solid. Recrystallization from acetonitrile (10 mL, dissolved with warming and then cooled to 0° C. overnight) gave the title compound (49 mg) as a white solid.

Workup

  1. temperatureAfter cooling to room temperature
  2. stirringThe resulting milky suspension was stirred vigorously for 30 minutes
  3. waitleft
  4. waitstanding overnight at room temp
  5. filtrationThe mixture was filtered
  6. washthe collected solid was washed with water
  7. customdried in vacuo
  8. customleaving a white solid
  9. customRecrystallization from acetonitrile (10 mL
  10. dissolutiondissolved
  11. temperaturewith warming
  12. temperaturecooled to 0° C. overnight)

Sources & evidence

ORD record
ord-43f95aaa0dac428ca9a4a8e01f7df808
Source dataset
uspto-grants-2005_02
Patent number
US06852731B2

Linked notes

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