反应详情

A mixture of bromopyrazine (1.64 g), 6-[(6-bromohexyl)oxy]-1-hexyne (2.69 g) N,N-dicyclohexylamine (1.88 g), BTPC (130 mg) and copper (I) iodide (13 mg) in acetonitrile (30 ml) was stirred at 22° under nitrogen for 1 h. Ether (150 ml) was added, the mixture filtered and evaporated in vacuo to an oil which was purified by FCC eluting with hexane-ether (3:2→1:1) followed by ether to give the title compound as a dark yellow oil (2.79 g), t.l.c. (ether) Rf 0.5.

1. filtrationthe mixture filtered
2. customevaporated in vacuo to an oil which
3. customwas purified by FCC
4. washeluting with hexane-ether (3:2→1:1)