Photochemistry of estr-4-en-3-ones: 17. beta.-hydroxy-4-estren-3-one, 17. beta.-acetoxy-4, 9-estradien-3-one, 17. beta.-hydroxy-4, 9, 11-estratrien-3-one, and …

JR Williams, PL Mattei, A Abdel-Magid…

Index: Williams; Mattei; Abdel-Magid; Blount Journal of Organic Chemistry, 1986 , vol. 51, # 6 p. 769 - 773

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Citation Number: 7

Abstract

The photochemistry of estr-4-en-3-ones la, b is solvent dependent, yielding estr-5-en-3-ones 2 in ethyl acetate or 5a-estran-3-ones 3 in alcoholic solvents. Further irradiation of 5a-estran- 3-ones 3 in alcoholic solvent yields the 2, 3-and 3, 4-seco-5a-estrane 3-esters 4 and 5 and the 2, 3-secoestr-l-en-3-al (6). Photolysis of estra-4, 9-dien-3-one 7 yields the photodimer 8 whereas the estra-4, 9, 11-trien-3-one 9 yielded polymer.