Sodium borohydride → 4-Chloro-2-(1,1-dioxido-2,3-dihydro-1,4-benzothiazepin-4(5H)-yl)-quinoline-6-methanol

HRID 540016Notes

Reaction equation

HRID 540016 reaction equation
[Cl:1][C:2]1[C:11]2[C:6](=[CH:7][CH:8]=[C:9]([C:12](OC)=[O:13])[CH:10]=2)[N:5]=[C:4]([N:16]2[CH2:22][C:21]3[CH:23]=[CH:24][CH:25]=[CH:26][C:20]=3[S:19](=[O:28])(=[O:27])[CH2:18][CH2:17]2)[CH:3]=1.[BH4-].[Na+]>O1CCCC1.O>[Cl:1][C:2]1[C:11]2[C:6](=[CH:7][CH:8]=[C:9]([CH2:12][OH:13])[CH:10]=2)[N:5]=[C:4]([N:16]2[CH2:22][C:21]3[CH:23]=[CH:24][CH:25]=[CH:26][C:20]=3[S:19](=[O:28])(=[O:27])[CH2:18][CH2:17]2)[CH:3]=1

Participants

5

Reactant 2

HCID 4311764Sodium borohydrideHCID 71255132methyl 4-chloro-2-(1,1-dioxido-2,3-dihydro-1,4-benzothiazepin-4(5H)-yl)quinoline-6-carboxylate

Product 1

HCID 712544654-Chloro-2-(1,1-dioxido-2,3-dihydro-1,4-benzothiazepin-4(5H)-yl)-quinoline-6-methanolYield 75%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Procedure

To a solution of methyl 4-chloro-2-(1,1-dioxido-2,3-dihydro-1,4-benzothiazepin-4 (5H)-yl)quinoline-6-carboxylate (2.0 g, 4.8 mmol) in tetrahydrofuran (50 mL) was added sodium borohydride (729 mg, 19.2 mmol). After being refluxed for 60 hours, the reaction mixture was diluted with water (30 mL) and extracted with dichloromethane (50 mL×2). The combined organic layers were dried over sodium sulfate and concentrated in vacuo to afford 1.4 g of the crude product.

Workup

  1. temperatureAfter being refluxed for 60 hours
  2. extractionextracted with dichloromethane (50 mL×2)
  3. dry with materialThe combined organic layers were dried over sodium sulfate
  4. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-86100c43c49646e783ca3b54d1b41172
Source dataset
uspto-grants-2014_10
Patent number
US08871756B2

Reaction notes

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