Reacción #336387

Ecuación de reacción

5-nitro-1,4-naphthoquinone

1,3-butadiene

ethylene glycol monomethyl ether

→

5-nitro-1,4,4a,9a-tetrahydroanthraquinone

Rendimiento 94.0%

Disolventes

water

Condiciones de reacción

Tratamiento posterior

1. 1
   OtroThe reaction pressure
2. 2
   FiltraciónThe precipitated crystals were filtered
3. 3
   Lavadowashed with 30 ml of methyl alcohol
4. 4
   Otrodried under reduced pressure

Procedimiento

A mixture comprising 10 g of the obtained 5-nitro-1,4-naphthoquinone, 3.3 g of 1,3-butadiene and 40 ml of ethylene glycol monomethyl ether was retained in a 100-milliliter autoclave at 50° C. for 6 hours with stirring. The reaction pressure was initially 1.2 atmospheres and 1.0 atmosphere when the reaction was over. Thereafter, 60 ml of water was added to the reaction mixture and cooled to 25° C. The precipitated crystals were filtered, washed with 30 ml of methyl alcohol and dried under reduced pressure to obtain 11.9 g of white 5-nitro-1,4,4a,9a-tetrahydroanthraquinone having a purity of 98%.

Fuente