Recyclable Hypervalent Iodine(III) Reagent Iodosodilactone as an Efficient Coupling Reagent for Direct Esterification, Amidation, and Peptide Coupling
作者:Jun Tian、Wen-Chao Gao、Dong-Mei Zhou、Chi Zhang
DOI:10.1021/ol301085v
日期:2012.6.15
hypervalent iodine(III) reagent plays a novel role as an efficient coupling reagent to promote the direct condensation between carboxylicacids and alcohols or amines to provide esters, macrocyclic lactones, amides, as well as peptides without racemization. The regeneration of iodosodilactone (1) can also be readily achieved. The intermediate acyloxyphosphonium ion C from the activation of a carboxylic acid
Heteroatom-Assisted Regio- and Stereoselective Palladium-Catalyzed Carboxylation of 9-Allyl Adenine
作者:Dhanashri A. Sable、Aniket Gholap、Saidurga Prasad Kommyreddy、Dipak J. Fartade、Santosh J. Gharpure、Carola Schulzke、Anant R. Kapdi
DOI:10.1021/acs.joc.2c00659
日期:2022.10.7
Strategy for the synthesis of acyclic nucleoside analogs of biological relevance via highly regio- and stereoselective C–H functionalization employing heteroatom-assisted palladium-catalyzedcarboxylation of 9-allyl adenine is disclosed. Substrate scope with different carboxylic acids was performed giving decent to good yields of the desired products. The method also allowed for the synthesis of deuterated