G. Daia, C. Gabbutt, J. Hepworth
Mar 5, 1998
Citations
0
Influential Citations
13
Citations
Journal
Tetrahedron Letters
Abstract
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.