Reaction #46588

Reaction equation

N-methyl-N-(2-methyl-1H-indol-3-ylmethyl)acrylamide

2-amino-5-bromopyrimidine

tri-ortho-tolylphosphine

diisopropylethylamine

→

title compound

Yield 128.8%

(E)-3-(2-Aminopyrimidin-5-yl)-N-(2-methyl-1H-indol-3-ylmethyl)-N-methylacrylamide

Yield 128.8%

Solvents

propionitrile

DMF

Conditions

Workup

1. 1
   Temperatureat reflux overnight
2. 2
   FiltrationThe dark mixture was filtered through Celite®
3. 3
   Concentrationthe filtrate was concentrated

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)+.

Source