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.
Original language | English |
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Pages (from-to) | 1215-1218 |
Number of pages | 4 |
Journal | Tetrahedron Letters |
Volume | 39 |
Issue number | 10 |
DOIs | |
Publication status | Published - 5 Mar 1998 |
Externally published | Yes |