Pyridine → Ethyl 4-(3-naphthalen-2-yl-acryloylamino)benzoate

HRID 2422936Notes

Reaction equation

HRID 2422936 reaction equation
N1C=CC=CC=1.[NH2:7][C:8]1[CH:18]=[CH:17][C:11]([C:12]([O:14][CH2:15][CH3:16])=[O:13])=[CH:10][CH:9]=1.[CH:19]1[C:28]2[C:23](=[CH:24][CH:25]=[CH:26][CH:27]=2)[CH:22]=[CH:21][C:20]=1/[CH:29]=[CH:30]/[C:31](Cl)=[O:32]>C(Cl)Cl>[CH:19]1[C:28]2[C:23](=[CH:24][CH:25]=[CH:26][CH:27]=2)[CH:22]=[CH:21][C:20]=1[CH:29]=[CH:30][C:31]([NH:7][C:8]1[CH:9]=[CH:10][C:11]([C:12]([O:14][CH2:15][CH3:16])=[O:13])=[CH:17][CH:18]=1)=[O:32]

Participants

5

Reactant 3

HCID 1049PyridineHCID 2337BenzocaineHCID 11830880(E)-3-(2-naphthyl)propenoyl chloride

Product 1

HCID 67243223Ethyl 4-(3-naphthalen-2-yl-acryloylamino)benzoateYield 80%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

Anhydrous pyridine (0.331 g, 4.2 mmol, 1.2 eq) and ethyl 4-aminobenzoate (0.577 g, 3.50 mmol) were added to a solution of (E)-3-(2-naphthyl)propenoyl chloride (prepared from its corresponding acid) (0.757 g, 3.50 mmo) in anhydrous DCM (15 ml) under Ar. After stirring overnight at room temperature, the white precipitate was filtered, washed with DCM (10 ml) and dried under vacuum to give the amide 42 (0.960 g, 2.78 mmol, 80%) as a white solid, mp 173-175° C. 1H NMR (400 MHz, DMSO-d6) δ 1.30 (3H, t, J 7.2 Hz), 4.28 (2H, t, J 7.2 Hz), 6.97 (1H, d, J 15.4 Hz), 7.54-7.57 (2H, m), 7.7 (1H, d, J 15.4 Hz), 7.77 (1H, dd, J 1.6, 9.2 Hz), 7.84 (2H, d, J 8.8 Hz), 7.93-7.97 (5H, m), 8.15 (1H, s), 10.58 (1H, bs). 13C NMR (100 MHz, DMSO-d6) δ 14.88, 61.09, 119.30, 122.91, 124.18, 124.99, 127.47, 127.83, 128.38, 129.09, 129.36, 130.05, 130.98, 132.82, 133.68, 134.26, 141.64, 144.33, 164.69, 166.01. νmax (solid)/(cm−1) 3357, 1702, 1660, 1619, 1607, 1591, 1521, 1403, 1282. MS (API-ES): m/z 346 [M+H]+ (100%), HRMS (API-ES) m/z found 346.1443 [M+H]+.

Workup

  1. filtrationthe white precipitate was filtered
  2. washwashed with DCM (10 ml)
  3. customdried under vacuum

Sources & evidence

ORD record
ord-114f9e51929f4924a34c69cf59a14a9d
Source dataset
uspto-grants-2011_06
Patent number
US07960434B2

Reaction notes

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