Potassium Cyanide → 1-(Benzo[d][1,3]dioxol-5-yl)-N-(3-bromo-4-(cyanomethyl)phenyl)cyclopropane-carboxamide

HRID 2242710Notes

Reaction equation

HRID 2242710 reaction equation
[O:1]1[C:5]2[CH:6]=[CH:7][C:8]([C:10]3([C:13]([NH:15][C:16]4[CH:21]=[CH:20][C:19]([CH2:22]O)=[C:18]([Br:24])[CH:17]=4)=[O:14])[CH2:12][CH2:11]3)=[CH:9][C:4]=2[O:3][CH2:2]1.CS(Cl)(=O)=O.[CH:30]([N:33](CC)C(C)C)(C)C.[C-]#N.[K+]>C(#N)C.ClCCl>[O:1]1[C:5]2[CH:6]=[CH:7][C:8]([C:10]3([C:13]([NH:15][C:16]4[CH:21]=[CH:20][C:19]([CH2:22][C:30]#[N:33])=[C:18]([Br:24])[CH:17]=4)=[O:14])[CH2:12][CH2:11]3)=[CH:9][C:4]=2[O:3][CH2:2]1

Participants

7

Reactant 4

HCID 9032Potassium CyanideHCID 31297Methanesulfonyl chlorideHCID 81531DiisopropylethylamineHCID 592062471-(benzo[d][1,3]dioxol-5-yl)-N-(3-bromo-4-(hydroxymethyl)phenyl)cyclopropanecarboxamide

Product 1

HCID 592067161-(Benzo[d][1,3]dioxol-5-yl)-N-(3-bromo-4-(cyanomethyl)phenyl)cyclopropane-carboxamideYield 46.3%

Reagents, catalysts & solvents 2

HCID 6342AcetonitrileSolventHCID 6344DichloromethaneSolvent

Procedure

1-(Benzo[d][1,3]dioxol-5-yl)-N-(3-bromo-4-(hydroxymethyl)phenyl)cyclopropane-carboxamide (1.08 g, 2.78 mmol), methanesulfonyl chloride (0.24 mL, 3.1 mmol), and N,N-diisopropylethylamine (0.72 mL, 4.1 mmol) were dissolved in acetonitrile (27 mL) at 25° C. After complete dissolution, KCN (450 mg, 6.95 mmol) was added and the reaction was stirred for 14 d. The reaction was diluted with dichloromethane (25 mL) and washed with water (25 mL). The organic extracts were dried over Na2SO4 and evaporated. The crude product was purified by chromatography on silica gel (eluting with 0-100% ethyl acetate in hexanes) to afford 1-(benzo[d][1,3]dioxol-5-yl)-N-(3-bromo-4-(cyanomethyl)phenyl)cyclo-propane carboxamide (514 mg, 46%). ESI-MS m/z calc. 398.0, found 399.1 (M+1)+; retention time 3.24 minutes.

Workup

  1. additionwas added
  2. washwashed with water (25 mL)
  3. dry with materialThe organic extracts were dried over Na2SO4
  4. customevaporated
  5. customThe crude product was purified by chromatography on silica gel (eluting with 0-100% ethyl acetate in hexanes)

Sources & evidence

ORD record
ord-b75211f6abd448bf9625052332295136
Source dataset
uspto-grants-2010_03
Patent number
US07671221B2

Reaction notes

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