α,α-diacetyl ketene thioacetals had been investigated as odorless thiol equivalents in thia-Michael addition reaction.Under solvent-free conditions,a series of reactions between α,α-diacetyl ketene thioacetals and...α,α-diacetyl ketene thioacetals had been investigated as odorless thiol equivalents in thia-Michael addition reaction.Under solvent-free conditions,a series of reactions between α,α-diacetyl ketene thioacetals and α,β-unsaturated ketones were carried out promoting by concentrated hydrochloric acid.The corresponding thia-Michael adducts in high yields were obtained.Furthermore,a mechanism for this thia-Michael addition reaction was proposed preliminary.展开更多
Microwave irradiation can accelerate the rate of the synthesis reaction of ferrocenyl α,β unsaturated ketones by using KF Al 2O 3 as a catalyst. Six fitled compounds were prepared with microware assisted synthesis. ...Microwave irradiation can accelerate the rate of the synthesis reaction of ferrocenyl α,β unsaturated ketones by using KF Al 2O 3 as a catalyst. Six fitled compounds were prepared with microware assisted synthesis. Their structures were characterized by 1H NMR, IR, and elemental analysis.展开更多
文摘α,α-diacetyl ketene thioacetals had been investigated as odorless thiol equivalents in thia-Michael addition reaction.Under solvent-free conditions,a series of reactions between α,α-diacetyl ketene thioacetals and α,β-unsaturated ketones were carried out promoting by concentrated hydrochloric acid.The corresponding thia-Michael adducts in high yields were obtained.Furthermore,a mechanism for this thia-Michael addition reaction was proposed preliminary.
文摘Microwave irradiation can accelerate the rate of the synthesis reaction of ferrocenyl α,β unsaturated ketones by using KF Al 2O 3 as a catalyst. Six fitled compounds were prepared with microware assisted synthesis. Their structures were characterized by 1H NMR, IR, and elemental analysis.
