作者:G.Elena Daia、Christopher D. Gabbutt、John D. Hepworth、B.Mark Heron、David E. Hibbs、Michael B. Hursthouse
DOI:10.1016/s0040-4039(97)10733-x
日期:1998.3
3-Acylchromone acetals are lithiated at C-2. Subsequent electrophilic trapping gives chromones 4 together with a ring-contracted dimer 6. During the formation of some acetals, an acid-catalysed rearrangement to a 2-substituted 3-formylchromone acetal is observed.
3-酰基色酮缩醛在C-2处被锂化。随后的亲电捕集得到色酮4以及环缩合的二聚体6。在一些缩醛的形成过程中,观察到酸催化的重排成2-取代的3-甲酰基色酮缩醛。