Tetrahydrofuran → N-(7-cyclohexylisoquinolin-3-yl)cyclopropanecarboxamide

HRID 1502259Notes

Reaction equation

HRID 1502259 reaction equation
Br[C:2]1[CH:11]=[C:10]2[C:5]([CH:6]=[C:7]([NH:12][C:13]([CH:15]3[CH2:17][CH2:16]3)=[O:14])[N:8]=[CH:9]2)=[CH:4][CH:3]=1.O1CCCC1.[CH:23]1([Mg]Cl)[CH2:28][CH2:27][CH2:26][CH2:25][CH2:24]1>CCOCC>[CH:23]1([C:2]2[CH:11]=[C:10]3[C:5]([CH:6]=[C:7]([NH:12][C:13]([CH:15]4[CH2:17][CH2:16]4)=[O:14])[N:8]=[CH:9]3)=[CH:4][CH:3]=2)[CH2:28][CH2:27][CH2:26][CH2:25][CH2:24]1

Participants

5

Reactant 3

HCID 8028TetrahydrofuranHCID 67974626N-(7-bromoisoquinolin-3-yl)cyclopropanecarboxamideHCID 178478990HCID 178478990, compound2×

Product 1

HCID 57410480N-(7-cyclohexylisoquinolin-3-yl)cyclopropanecarboxamideYield 19%

Reagents, catalysts & solvents 1

HCID 3283Diethyl EtherSolvent2×

Conditions

Temperature
0 °C

Procedure

To a solution of N-(7-bromoisoquinolin-3-yl)cyclopropanecarboxamide (131.8 mg, 0.4527 mmol) in tetrahydrofuran (6.0 mL, 74 mmol) in an oven-dried flask at 0° C. was added DPPPNiCl2 (18.2 mg, 0.0336 mmol) followed by 2.0 M of cyclohexylmagnesium chloride in ether (0.60 mL). The reaction was stirred at 0° C. for 1.5 hours and then heated at 40° C. overnight. DPPPNiCl2 (21 mg) and 2.0 M of cyclohexylmagnesium chloride in ether (0.60 mL) were added. The reaction was heated at 50° C. for an additional 3.5 hours. The mixture was then partitioned between ethyl acetate and water, and the organic layer was washed with water and brine, dried over MgSO4, filtered, and evaporated in vacuo. The crude product was purified via reverse phase HPLC and lyophilized to yield 24.8 mg (19%) of N-(7-cyclohexylisoquinolin-3-yl)cyclopropanecarboxamide. LCMS (ESI): RT (min)=5.228, M+H=295.1, method=E; 1H NMR (400 MHz, DMSO-d6) δ 10.84 (s, 1H), 9.06 (s, 1H), 8.40 (s, 1H), 7.82 (s, 1H), 7.77 (d, J=8.6 Hz, 1H), 7.61 (dd, J=8.6, 1.7 Hz, 1H), 2.67 (t, J=11.7 Hz, 1H), 2.10-1.99 (m, 1H), 1.93-1.79 (m, 4H), 1.74 (d, J=12.3 Hz, 1H), 1.58-1.20 (m, 5H), 0.82 (dq, J=4.9, 2.9 Hz, 4H).

Workup

  1. temperatureheated at 40° C. overnight
  2. temperatureThe reaction was heated at 50° C. for an additional 3.5 hours
  3. customThe mixture was then partitioned between ethyl acetate and water
  4. washthe organic layer was washed with water and brine
  5. dry with materialdried over MgSO4
  6. filtrationfiltered
  7. customevaporated in vacuo
  8. customThe crude product was purified via reverse phase HPLC

Sources & evidence

ORD record
ord-ad1a5bc51ee242269d5463db180f00a8
Source dataset
uspto-grants-2015_12
Patent number
US09206175B2

Reaction notes

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