Dichloromethane → HCID 66966750, compound

Participants

Reaction Steps

4.1 g (3.5 mmol) tetrakis(triphenyl)phosphine-palladium(0), 17.2 g (175.4 mmol) trimethyl-silylacetylene and 7.9 g (70.2 mmol) 1,4-diazabicyclo[2.2.2]octane were consecutively added to a suspension of 12.5 g (35.1 mmol) 6-(5-bromothiophene-2-yl)-N-tert-butylimidazo[2,1-b]thiazole-5-amine in acetonitrile (150 ml). The reaction solution was heated for 72 h under reflux and subsequently concentrated in a vacuum. 3.0 g (7.9 mmol, 23%) N-tert-butyl-6-(5-((trimethylsilyl)ethynyl)thiophene-2-yl)imidazo[2,1-b]thiazole-5-amine ([MH+] 374.1) was obtained by CC (DCM/AE 95:5).

Provenance & Evidence