5849-12-7Relevant academic research and scientific papers
Mild Deprotection of Dithioacetals by TMSCl/NaI Association in CH3CN
Yao, Yunxin,Zhao, Guangkuan,Hamze, Abdallah,Alami, Mouad,Provot, Olivier
, p. 5775 - 5779 (2020)
A mild process using a combination of TMSCl and NaI in acetonitrile is used to regenerate carbonyl compounds from a variety of dithiane and dithiolane derivatives. This easy to handle and inexpensive protocol is also efficient to deprotect oxygenated and mixed acetals as 1,3-dioxanes, 1,3-dioxolanes and 1,3-oxathianes quantitatively. As a possible extension of this method, it was also shown that nitrogenated substrates such as hydrazones, N-tosylhydrazones, and ketimines reacted well under these conditions to give the expected ketones in high yields. The methodology proposed herein is a good alternative to the existing methods since it does not use metals, oxidants, reducing agents, acidic or basic media, and keto-products were obtained in high to excellent yields.
Mass spectra of 1,3-dithiaspiranes and 2-aryl-1,3-dithianes
Shiue,Lin,Kuo,Chen
, p. 461 - 465 (2007/10/02)
The mass spectra of 20 1,3-dithianes were studied. The fragmentation patterns including the loss of 74 u and 107 u and clearage of the substituent at C-2 depended strongly on the nature of the substituents at that position. 2,2-Diphenyl-1,3-dithiane under
