Production of 3-hydroxy-1,3,5(10)-estratrien-17-one

Details Production of 3-hydroxy-1,3,5(10)-estratrien-17-one Production of 3-hydroxy-1,3,5(10)-estratrien-17-one

C - Chemistry, Metallurgy

07

J

C07J 1/00 (2006.01)

Patent

CA 2042029

ABSTRACT A process for producing 3-hydroxy-1,3,5(10)-estratriene-17-on by the pyrolysis of 1,4-androstadiene-3,17-dion in the presence of 1,2,3,4-tetrahydronaphthaline as a hydrogen donor is described, in that one mixes 1,2,3,4-tetrahydronaphthaline that has been pre-heated to a temperature of 450-850°C in a mixing zone with a solution of 1,4-androstadiene-3,17-dion in 1,2,3,4- tetrahydronaphthaline that has been heated to a temperature of up to 300°C, then heats the mixture in a pyrolysis zone during a holding time of 0.001 to 60 seconds to a temperature of 450- 700°C, and then cools the product that emerges from the pyrolysis zone, characterized in that one carries out the pyrolysis at a pressure of 3.5 x 106 to 3 x 108 Pa.

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