Triethylamine → N-(6-chloro-5-ethylpyridin-2-yl)-1-(2,2-difluorobenzo[d][1,3]dioxol-5-yl)cyclopropanecarboxamide

HRID 2420892Notes

Reaction equation

HRID 2420892 reaction equation
[F:1][C:2]1([F:17])[O:6][C:5]2[CH:7]=[CH:8][C:9]([C:11]3([C:14](Cl)=[O:15])[CH2:13][CH2:12]3)=[CH:10][C:4]=2[O:3]1.C(N(CC)CC)C.[Cl:25][C:26]1[N:31]=[C:30]([NH2:32])[CH:29]=[CH:28][C:27]=1[CH2:33][CH3:34]>ClCCl>[Cl:25][C:26]1[N:31]=[C:30]([NH:32][C:14]([C:11]2([C:9]3[CH:8]=[CH:7][C:5]4[O:6][C:2]([F:17])([F:1])[O:3][C:4]=4[CH:10]=3)[CH2:13][CH2:12]2)=[O:15])[CH:29]=[CH:28][C:27]=1[CH2:33][CH3:34]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 575168501-(2,2-Difluoro-1,3-benzodioxol-5-yl)cyclopropanecarbonyl chlorideHCID 591659851004294-54-5

Product 1

HCID 59165835N-(6-chloro-5-ethylpyridin-2-yl)-1-(2,2-difluorobenzo[d][1,3]dioxol-5-yl)cyclopropanecarboxamideYield 69%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

1-(2,2-Difluorobenzo[d][1,3]dioxol-5-yl)cyclopropanecarbonyl chloride (1.08 g, 4.15 mmol) was placed in an oven-dried flask which was allowed to cool under nitrogen. Dichloromethane (10 mL), triethylamine (1.75 mL, 12.5 mmol), and 6-chloro-5-ethylpyridin-2-amine (4.15 mmol) were added and the reaction mixture was stirred for 16 hours. The reaction mixture was then washed with a saturated aqueous solution of sodium chloride, evaporated to near dryness, and then purified on 40 g of silica gel utilizing a gradient of 0-30% ethyl acetate in hexanes to yield N-(6-chloro-5-ethylpyridin-2-yl)-1-(2,2-difluorobenzo[d][1,3]dioxol-5-yl)cyclopropanecarboxamide (1.09 g, 69%). ESI-MS m/z calc. 380.1, found; 381.0 (M+1)+Retention time 2.24 minutes.

Workup

  1. temperatureto cool under nitrogen
  2. washThe reaction mixture was then washed with a saturated aqueous solution of sodium chloride
  3. customevaporated
  4. custompurified on 40 g of silica gel utilizing a gradient of 0-30% ethyl acetate in hexanes

Sources & evidence

ORD record
ord-1951f9ce6c7b4888bf1d8f167ff4d84d
Source dataset
uspto-grants-2011_06
Patent number
US07956052B2

Reaction notes

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