Chemoselective dithioacetalization of aromatic- and α,β-unsaturated aldehydes in the presence of other structurally different aldehydes and ketones was achieved efficiently in the presence of catalytic amounts of LiBr under solvent-free conditions. Due to the neutral reaction conditions, this method is compatible with acid sensitive substrates.
在无溶剂条件下,在催化量的LiBr存在下,成功实现了芳香醛和α,β-不饱和醛的
化学选择性二
硫缩醛化,尽管存在其他结构不同的醛和酮。由于反应条件中性,该方法与酸敏感基质相容。