Tetrahedron

Pyrylium salt sensitized photochemical deprotections of dithioacetals and ketals

…, Y Murakami, Y Tamagawa, M Kato, E Hasegawa

Index: Kamata, Masaki; Murakami, Yukiko; Tamagawa, Yasuko; Kato, Mitsuaki; Hasegawa, Eietsu Tetrahedron, 1994 , vol. 50, # 45 p. 12821 - 12828

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Citation Number: 28

Abstract

Photoreactions of various dithioacetals and ketals using tris (p-chlorophenyl) pyrylium perchlorate as a sensitizer were studied. Irradiation (λ&> 360 nm) of dichloromethane solutions containing dithioacetals or ketals and pyrylium salt afforded the corresponding carbonyl compounds in good to excellent yields in the presence of molecular oxygen.