A combination of trimethylsilyl chloride and hydrous natural montmorillonite clay: an efficient solid acid catalyst for the azidation of benzylic and allylic alcohols with trimethylsilyl azide
作者:Michael A. Tandiary、Yoichi Masui、Makoto Onaka
DOI:10.1039/c4ra13238f
日期:——
We present a new procedure to convert in situ natural montmorillonite clay into a partially acidified one using a catalytic amount of trimethylsilyl chloride and trace water.
A Direct Brønsted Acid-Catalyzed Azidation of Benzhydrols and Carbohydrates
作者:Jeffery Regier、Robert Maillet、Yuri Bolshan
DOI:10.1002/ejoc.201900104
日期:2019.4.9
HBF4·OEt2 complex was used as an efficient Brønsted acid catalyst for direct azidation reactions on substrates bearing benzhydryl and anomeric alcohols. This methodology demonstrated excellent functional group tolerance to both electron‐rich and electron‐poor benzhydrylalcohols as well as unprotected functional groups.
Direct AlCl<sub>3</sub>-catalyzed transformation of benzyl THP ethers and allyl benzyl ethers
作者:Tien Tan Bui、Hee-Kwon Kim
DOI:10.1080/00397911.2020.1829644
日期:2021.2.1
THP and allyl groups are frequently used for the protection of alcohols. In this study, novel direct transformations of benzyl THP ethers and allyl benzyl ethers, protected forms of alcohols, are r...
Facile Direct Coupling Reactions of
<scp>MOM</scp>
‐protected Benzylic Alcohols Using Aluminum Chloride
作者:Tien Tan Bui、Hee‐Kwon Kim
DOI:10.1002/bkcs.12358
日期:2021.9
used protecting groups for alcohols. This study describes novel direct functionalization of the MOM-protected benzylic alcohols. Preparation of allylic compounds from benzyl MOM ethers was successfully achieved by utilization of allyltrimethylsilane and AlCl3. In addition, direct azidation of benzyl MOM ethers using TMSN3 was successful carried out under AlCl3-mediated reaction conditions. These results
Ferrocenium Boronic Acid Catalyzed Deoxygenative Coupling of Alcohols with Carbon- and Nitrogen-Based Borate and Silane Nucleophiles
作者:Jake J. Blackner、Deirdre M. Rooney、Joshua W. Hollett、J. Adam McCubbin
DOI:10.1021/acs.joc.3c00463
日期:2023.7.7
yields, increased diversity of the alcohol substrate scope, and high E/Z selectivity. Furthermore, the reaction proceeds under mild conditions and yields up to 98%. Computationalstudies provide a rationalization for a mechanistic pathway for the retention of E/Z stereochemistry when E or Z alkenyl silanes are used as nucleophiles. This methodology is complementary to existing methodologies for deoxygenative