Nickel boride mediated cleavage of 1,3-oxathiolanes: a convenient approach to deprotection and reduction
作者:Jitender M. Khurana、Devanshi Magoo、Kiran Dawra
DOI:10.1007/s00706-015-1608-3
日期:2016.6
cleaved by nickelboride allowing regeneration of corresponding carbonyl compounds. Optimum reaction conditions have also been defined to obtain alcohols exclusively by reduction of oxathiolanes. Reactions are rapid at room temperature and do not require protection from atmosphere. Mild reaction conditions, simple work up, and high yields are some of the major advantages of the procedure. Graphical
Zn(ii) porphyrin based nano-/microscale MOFs showed morphology dependent 1O2 sensitization efficiency and were used as selective photocatalysts for oxathiolane deprotection.
Blue LED-Promoted Oxathiacetalization of Aldehydes and Ketones
作者:You-Chen Liu、Daggula Mallikarjuna Reddy、Xin-An Chen、Yi-Chen Shieh、Chin-Fa Lee
DOI:10.1002/ejoc.202000218
日期:2020.5.10
A visible‐light‐promoted oxathiacetalization of aldehydes and ketones with 2‐mercaptoethanol and 3‐mercaptopropan‐1‐ol in the presence of eosin Y as catalyst is described leading to the formation of 1,3‐oxathiolanes and 1,3‐oxathianes at ambient temperature and under metal‐free conditions. The solvent is playing vital role in the protection of carbonyl compounds with mercaptoalcohol.
Deprotection of 1,3-oxathiolanes to ketones promoted by base
作者:Biao Du、Changchun Yuan、Langzhong Zhang、Li Yang、Bo Liu
DOI:10.1016/j.tetlet.2013.02.053
日期:2013.5
A variety of 1,3-oxathiolanes can be easily converted to the corresponding ketones in good yields with LTMP in THF. This deprotection methodology shows satisfactory chemoselectivity when other protecting groups, such as dimethylketal, 1,3-dioxolane, 1,3-dithiane, and other acid-sensitive groups, are present within the same substrates. (C) 2013 Elsevier Ltd. All rights reserved.
Silica-Gel Supported Sulfamic Acid (SA/SiO<sub>2</sub>) as an Efficient and Reusable Catalyst for Conversion of Ketones into Oxathioacetals and Dithioacetals
A simple and efficient method for the conversion of carbonyl compounds to oxathioacetals and dithioacetals using SA/SiO2 as an acid catalyst has been achieved. SA/SiO2 is easily recovered from the reaction mixture and can be reused at least 15 times without loss of catalytic activity.