Sodium borohydride → HCID 12082825, compound

HRID 1941711Notes

Reaction equation

HRID 1941711 reaction equation
[CH:1]([C:3]1[C:4]([C:24]([F:27])([F:26])[F:25])=[N:5][N:6]([C:14]2[CH:19]=[CH:18][C:17]([S:20]([NH2:23])(=[O:22])=[O:21])=[CH:16][CH:15]=2)[C:7]=1[C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)=[O:2].[BH4-].[Na+]>CO>[OH:2][CH2:1][C:3]1[C:4]([C:24]([F:25])([F:27])[F:26])=[N:5][N:6]([C:14]2[CH:19]=[CH:18][C:17]([S:20]([NH2:23])(=[O:21])=[O:22])=[CH:16][CH:15]=2)[C:7]=1[C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1

Participants

4

Reactant 2

HCID 4311764Sodium borohydrideHCID 12082824HCID 12082824, compound

Product 1

HCID 12082825HCID 12082825, compoundYield 46%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

To a solution of the aldehyde prepared in Step 2 (165 mg, 0.41 mmol) in methanol (3.5 mL) at 0° C. was added sodium borohydride (16 mg, 0.41 mmol). The reaction solution was kept at 0° C. for 2.5 hours. The reaction was quenched with the addition of an aqueous 1M KHSO4 solution (3 mL). The mixture was extracted with dichloromethane and the organic solution dried and concentrated. The residue was chromatographed on silica (1:1 hexane:ethyl acetate) to give the desired product (36 mg, 46%): m.p. 179°-180° C.; 1H NMR d 7.91 (m, 2H), 7.53-7.40 (m, 5H), 6.75 (s, 2H), 4.53 (d, 2h, J=5.0 Hz), 4.30 (t, 1H, J=5.0 Hz).

Workup

  1. customThe reaction was quenched with the addition of an aqueous 1M KHSO4 solution (3 mL)
  2. extractionThe mixture was extracted with dichloromethane
  3. customthe organic solution dried
  4. concentrationconcentrated
  5. customThe residue was chromatographed on silica (1:1 hexane:ethyl acetate)

Sources & evidence

ORD record
ord-d5eb2d5b4f5345de9f1b8b9659001441
Source dataset
uspto-grants-2013_03
Patent number
USRE044048E1

Reaction notes

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