125442-50-4Relevant academic research and scientific papers
Synthesis and some transformations of polybrominated quinone diazides
Vasin,Fadin,Tarasova
, p. 1815 - 1821 (2018/02/06)
The reduction of polybrominated o- and p-nitrophenols with granular tin in concentrated aqueous HCl gave polybrominated aminophenols which were diazotized with sodium nitrite in concentrated sulfuric acid at 0°C to obtain polybrominated o- and p-quinone diazides. Their thermolysis with elimination of nitrogen generated ketocarbenes which reacted with acetylacetone to form insertion products at the activated methylene group. Ketocarbenes generated from o-quinone diazides reacted with typical dipolarophiles such as acetonitrile, benzonitrile, styrene, and phenylacetylene to afford the corresponding [3 + 2]-cycloaddition products.
SYNTHESIS OF SOME FUSED PYRIDINE- AND OXAZOLE-POLYCYCLIC SYSTEM FROM 10-(METHOXYIMINO)PHENANTHREN-9-ONE
Nicolaides, D. N.,Papageorgiou, G. K.,Stephanidou-Stephanatou, J.
, p. 4585 - 4592 (2007/10/02)
10-(Methoxyimino)phenanthren-9-one (1) reacts with DMAD (2) in dioxane to give dimethyl 7-oxo-7H-dibenzoquinoline-4,5-dicarboxylate 4, whereas from the reaction of 1 with 2 in toluene besides 4, the oxazole 5 and also dimethyl 2-phenyldibenzoqu
