Benzyl mercaptan → 2-[(3-benzylsulfanylphenyl)(1-methylpiperidin-4-yloxy)methyl]-1H-benzimidazole

HRID 2404427Notes

Reaction equation

HRID 2404427 reaction equation
Br[C:2]1[CH:3]=[C:4]([CH:8]([O:18][CH:19]2[CH2:24][CH2:23][N:22]([CH3:25])[CH2:21][CH2:20]2)[C:9]2[NH:13][C:12]3[CH:14]=[CH:15][CH:16]=[CH:17][C:11]=3[N:10]=2)[CH:5]=[CH:6][CH:7]=1.CC1(C)C2C(=C(P(C3C=CC=CC=3)C3C=CC=CC=3)C=CC=2)OC2C(P(C3C=CC=CC=3)C3C=CC=CC=3)=CC=CC1=2.[CH2:68]([SH:75])[C:69]1[CH:74]=[CH:73][CH:72]=[CH:71][CH:70]=1.C(N(C(C)C)CC)(C)C>C(=CC(C=CC1C=CC=CC=1)=O)C1C=CC=CC=1.C(=CC(C=CC1C=CC=CC=1)=O)C1C=CC=CC=1.[Pd].O1CCOCC1>[CH2:68]([S:75][C:2]1[CH:3]=[C:4]([CH:8]([O:18][CH:19]2[CH2:24][CH2:23][N:22]([CH3:25])[CH2:21][CH2:20]2)[C:9]2[NH:13][C:12]3[CH:14]=[CH:15][CH:16]=[CH:17][C:11]=3[N:10]=2)[CH:5]=[CH:6][CH:7]=1)[C:69]1[CH:74]=[CH:73][CH:72]=[CH:71][CH:70]=1

Participants

7

Reactant 4

HCID 7509Benzyl mercaptanHCID 81531DiisopropylethylamineHCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)HCID 56947989HCID 56947989, compound

Product 1

HCID 668357172-[(3-benzylsulfanylphenyl)(1-methylpiperidin-4-yloxy)methyl]-1H-benzimidazole

Reagents, catalysts & solvents 2

HCID 1542701,5-Diphenylpenta-1,4-dien-3-one;palladiumCatalystHCID 312751,4-DioxaneSolvent

Conditions

Temperature
120 °C

Procedure

A screw-cap tube is charged with 2-[(3-bromophenyl)(1-methylpiperidin-4-yloxy)methyl]-1H-benzimidazole (200 mg), palladium bis(dibenzylideneacetone) (14 mg), Xantphos (14 mg), benzyl mercaptan (59 μL), Diisopropylethylamine (174 μL) and 1,4-dioxane (2 mL). The tube is evacuated, filled with argon and sealed. After stirring at 120° C. for 24 h, the mixture is diluted with ethyl acetate and water and the aqueous phase is extracted with ethyl acetate. The pooled organic extracts are dried over magnesium sulfate and concentrated under reduced pressure. The residue is purified by chromatography (gradient dichloromethane/methanol/ammonia from 100/0/0 to 95/5/0.5) to afford 2-[(3-benzylsulfanylphenyl)(1-methylpiperidin-4-yloxy)methyl]-1H-benzimidazole

Workup

  1. customThe tube is evacuated
  2. additionfilled with argon
  3. customsealed
  4. additionthe mixture is diluted with ethyl acetate and water
  5. extractionthe aqueous phase is extracted with ethyl acetate
  6. dry with materialThe pooled organic extracts are dried over magnesium sulfate
  7. concentrationconcentrated under reduced pressure
  8. customThe residue is purified by chromatography (gradient dichloromethane/methanol/ammonia from 100/0/0 to 95/5/0.5)

Sources & evidence

ORD record
ord-e7cc2326ad834f8aa6a756ddd01ce97e
Source dataset
uspto-grants-2014_08
Patent number
US08802664B2

Reaction notes

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