Tri-o-tolylphosphine → (E)-3-(2-aminopyrimidin-5-yl)-N-(2-methyl-1H-indol-3-ylmethyl)-N-methylacrylamide

HRID 1362121

Reaction equation

HRID 1362121 reaction equation
[CH3:1][N:2]([CH2:7][C:8]1[C:16]2[C:11](=[CH:12][CH:13]=[CH:14][CH:15]=2)[NH:10][C:9]=1[CH3:17])[C:3](=[O:6])[CH:4]=[CH2:5].[NH2:18][C:19]1[N:24]=[CH:23][C:22](Br)=[CH:21][N:20]=1.C1(C)C=CC=CC=1P(C1C=CC=CC=1C)C1C=CC=CC=1C.C(N(C(C)C)CC)(C)C>C(#N)CC.CN(C=O)C.CC([O-])=O.CC([O-])=O.[Pd+2]>[NH2:18][C:19]1[N:24]=[CH:23][C:22](/[CH:5]=[CH:4]/[C:3]([N:2]([CH2:7][C:8]2[C:16]3[C:11](=[CH:12][CH:13]=[CH:14][CH:15]=3)[NH:10][C:9]=2[CH3:17])[CH3:1])=[O:6])=[CH:21][N:20]=1

Participants

8

Reactant 4

HCID 80271Tri-o-tolylphosphineHCID 81531DiisopropylethylamineHCID 2313102-Amino-5-bromopyrimidineHCID 22139057N-(2-methyl-1H-indol-3-ylmethyl)-N-methylacrylamide

Product 1

HCID 9973366(E)-3-(2-aminopyrimidin-5-yl)-N-(2-methyl-1H-indol-3-ylmethyl)-N-methylacrylamideYield 128.8%

Reagents, catalysts & solvents 3

HCID 167845palladium(II) acetateCatalystHCID 6228DimethylformamideSolventHCID 7854PropionitrileSolvent

Procedure

A solution of N-methyl-N-(2-methyl-1H-indol-3-ylmethyl)acrylamide (1.18 g, 6.5 mmole), 2-amino-5-bromopyrimidine (0.5 g, 2.9 mmole), Pd(OAc)2 (0.11 g, 0.49 mmole), tri-ortho-tolylphosphine (0.17 g, 0.55 mmole), and diisopropylethylamine (1.5 mL, 8.6 mmole) in propionitrile (100 mL) and DMF (10 mL) was heated at reflux overnight. The dark mixture was filtered through Celite®, and the filtrate was concentrated. Flash chromatography on silica gel (9:1 CHCl3/CH3OH containing 5% NH4OH) gave the title compound (1.2 g, 65%): MS (ES) m/e 372 (M+H)+.

Workup

  1. temperatureat reflux overnight
  2. filtrationThe dark mixture was filtered through Celite®
  3. concentrationthe filtrate was concentrated

Sources & evidence

ORD record
ord-51c2a941bc87476bbb759989c7799e45
Source dataset
uspto-grants-2011_02
Patent number
US07879872B2

Linked notes

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