Showing papers on "Annulation published in 1975"
28 citations
18 citations
TL;DR: In this paper, the same principle reaction was used for the total synthesis of (±) 2 - (p - chlorophenyl) - 3 - oxa - A - nor - estra - 1,5(10), 9(11) - triene - 17 - acetate 12a.
12 citations
11 citations
TL;DR: In this paper, a condensation of enamines with 1-fluorovinyl methyl ketone was shown to give 6fluorocyclohexenones, which were obtained by condensation with dichlorofluoromethane with 2-methoxypropene.
Abstract: On condensation of enamines with 1-fluorovinyl methyl ketone, obtained by condensation of dichloro-fluoromethane with 2-methoxypropene, fluorinating annelation takes place giving 6-fluorocyclohexenones.
3 citations
1 citations
TL;DR: Mesityl oxide and related ketones react with protonated nitrogen heterocycles to form fused pyridinium salts as mentioned in this paper, which are then used to generate pyridine compounds.
Abstract: Mesityl oxide and related ketones react with protonated nitrogen heterocycles to form fused pyridinium salts.