Acetic Acid → HCID 13388350, compound

HRID 894704Notes

Reaction equation

HRID 894704 reaction equation
[CH3:1][C:2]1[NH:3][C:4]([CH:28]=[O:29])=[C:5]([C:23]([O:25][CH2:26][CH3:27])=[O:24])[CH:6]([C:13]2[CH:18]=[CH:17][CH:16]=[CH:15][C:14]=2[O:19][CH2:20][CH:21]=[CH2:22])[C:7]=1[C:8]([O:10][CH2:11][CH3:12])=[O:9].[BH4-].[Na+].C(O)(=O)C>C(O)C>[CH3:1][C:2]1[NH:3][C:4]([CH2:28][OH:29])=[C:5]([C:23]([O:25][CH2:26][CH3:27])=[O:24])[CH:6]([C:13]2[CH:18]=[CH:17][CH:16]=[CH:15][C:14]=2[O:19][CH2:20][CH:21]=[CH2:22])[C:7]=1[C:8]([O:10][CH2:11][CH3:12])=[O:9]

Participants

5

Reactant 3

HCID 176Acetic AcidHCID 4311764Sodium borohydrideHCID 13388356HCID 13388356, compound

Product 1

HCID 13388350HCID 13388350, compound

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent2×

Procedure

To a solution of diethyl 2-methyl-4-(2-allyloxyphenyl)-6-formyl-1,4-dihydropyridine-3,5-dicarboxylate (4.70 g) in ethanol (100 ml) was gradually added at 4° C. sodium borohydride (445.2 mg) and the resultant mixture was stirred at 4° C. for 1.5 hours under ice-cooling. The reaction mixture was acidified with 50% acetic acid and ethanol was removed. To the residue was added water and the aqueous mixture was stirred for 10 minutes. The powder was collected by filtration and washed with water to give crude crystals (4.49 g), which were recrystallized from methanol to give yellow crystals of diethyl 2-methyl-4-(2-allyloxyphenyl)-6-hydroxymethyl-1,4-dihydropiridine-3,5-dicarboxylate, m.p. 124° to 126° C.

Workup

  1. temperaturecooling
  2. customwas removed
  3. additionTo the residue was added water
  4. filtrationThe powder was collected by filtration
  5. washwashed with water
  6. customto give crude crystals (4.49 g), which
  7. customwere recrystallized from methanol

Sources & evidence

ORD record
ord-58ee76c0037c4de59f44734096eb81f6
Source dataset
uspto-grants-1981_08
Patent number
US04284634

Reaction notes

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