Reactions of 3-acylchromones with dimethyl 1,3-acetonedicarboxylate and 1,3-diphenylacetone: one-pot synthesis of functionalized 2-hydroxybenzophenones, 6H-benzo[c]chromenes and benzo[c]coumarins
β Scribed by Iaroshenko, Viktor O.; Savych, Iryna; Villinger, Alexander; Sosnovskikh, Vyacheslav Ya.; Langer, Peter
- Book ID
- 118140985
- Publisher
- Royal Society of Chemistry
- Year
- 2012
- Tongue
- English
- Weight
- 796 KB
- Volume
- 10
- Category
- Article
- ISSN
- 1477-0520
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π SIMILAR VOLUMES
## a b s t r a c t The cyclocondensation of 4-chloro-2-oxo-2H-chromene-3-carbaldehyde with 1,3-bis(silyloxy)-1,3-butadienes provides a convenient synthesis of benzo[c]chromen-6-ones.
Two spiro [1,2-dioxetane-3,6'-benzo(c)chromene]s bearing a t-butyldimethylsiloxy as a trigger at the 10'-or 2'-position were synthesized. On treatment with tetrabutylammonium fluoride in DMSO at 25Β°C, the 10'-siloxyspiro[1,2-dioxetane-3,6'benzo(c)chromene] decomposed rapidly to afford a flash of blu