Synthesis

Chemoselective thioacetalization using 3-(1, 3-dithian-2-ylidene) pentane-2, 4-dione as an odorless and efficient propane-1, 3-dithiol equivalent under solvent-free …

Y Ouyang, D Dong, C Zheng, H Yu, Q Liu, Z Fu

Index: Ouyang, Yan; Dong, Dewen; Zheng, Chunbai; Yu, Haifeng; Liu, Qun; Fu, Zhenqian Synthesis, 2006 , # 22 p. 3801 - 3804

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Citation Number: 9

Abstract

Abstract As a non-thiolic, odorless propane-1, 3-dithiol equivalent, 3-(1, 3-dithian-2-ylidene) pentane-2, 4-dione has been investigated in acid-promoted thioacetalization under solvent- free conditions. A range of selected aldehydes and aliphatic ketones have been converted into the corresponding dithioacetals in high yields. The relatively slow reaction rate of aromatic ketones allowed chemoselective protection of aromatic aldehydes or aliphatic ...