Sodium → HCID 15171888, compound

HRID 2050973Notes

Reaction equation

HRID 2050973 reaction equation
[OH:1][C:2]1[C:3]([CH3:28])=[C:4]([CH3:27])[C:5]2[O:10][C:9]([C:12]3[O:13][C:14]4[C:20]([O:21][CH3:22])=[CH:19][C:18]([CH:23]=[O:24])=[CH:17][C:15]=4[CH:16]=3)([CH3:11])[CH2:8][CH2:7][C:6]=2[C:25]=1[CH3:26].[Na]>C(O)C>[OH:1][C:2]1[C:3]([CH3:28])=[C:4]([CH3:27])[C:5]2[O:10][C:9]([C:12]3[O:13][C:14]4[C:20]([O:21][CH3:22])=[CH:19][C:18]([CH2:23][OH:24])=[CH:17][C:15]=4[CH:16]=3)([CH3:11])[CH2:8][CH2:7][C:6]=2[C:25]=1[CH3:26]

Participants

4

Reactant 2

HCID 5360545SodiumHCID 15171886HCID 15171886, compound

Product 1

HCID 15171888HCID 15171888, compound

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

A mixture of 0.2 g of rac-2-(3,4-dihydro 6-hydroxy-2,5,7,8-tetramethyl-2H-1-benzopyran-2-yl) -7-methoxy-5-benzofurancarboxaldehyde and 20 mg of sodium borohyride in 5 ml of ethanol was stirred under nitrogen for 30 minutes. It was partitioned between methylene chloride and saturated aqueous sodium bicarbonate solution. The organic layer was separated. dried over sodium sulfate and evaporated. Crystallization from ether/hexane yielded colorless crystals with m.p. 122°-125°.

Workup

  1. customIt was partitioned between methylene chloride and saturated aqueous sodium bicarbonate solution
  2. customThe organic layer was separated
  3. dry with materialdried over sodium sulfate
  4. customevaporated
  5. customCrystallization from ether/hexane yielded colorless crystals with m.p. 122°-125°

Sources & evidence

ORD record
ord-94c990f382d14851b138767a717be2bb
Source dataset
uspto-grants-1991_05
Patent number
US05015661

Reaction notes

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