β-Cyclodextrin/IBX in water: highly facile biomimetic one pot deprotection of THP/MOM/Ac/Ts ethers and concomitant oxidative cleavage of chalcone epoxides and oxidative dehydrogenation of alcohols
作者:Sumit Kumar、Naseem Ahmed
DOI:10.1039/c5gc01785h
日期:——
A mild and efficient one-pot deprotection of THP/MOM/Ac/Ts ethers and concomitant oxidative cleavage of epoxides and oxidative dehydrogenation of alcohols to form [small beta]-hydroxy 1, 2 diketones, 1, 2, 3 triketones...
对THP / MOM / Ac / Ts醚进行温和有效的一锅脱保护,并进行环氧化物的氧化裂解和醇的氧化脱氢反应,形成[小β-羟基1,2,2二酮,1,2,3三酮...
A Green, Solvent-Free, Microwave-Assisted, High-Yielding YbCl<sub>3</sub>Catalyzed Deprotection of THP/MOM/Ac/Ts Ethers of Chalcone Epoxide and 2′-Aminochalcone and Their Sequel Cyclization
作者:Sumit Kumar、Nishant Verma、Iram Parveen、Naseem Ahmed
DOI:10.1002/jhet.2517
日期:2016.11
Under microwave and solvent‐free conditions, YbCl3 efficiently catalyzed the deprotection of tetrahydropyran‐2‐yl, methoxymethyl (MOM), acetyl, and tosyl groups and sequelcyclization of chalconeepoxide to 2‐hydroxyindanone and 2′‐aminochalcone to aza‐flavanone. The reaction afforded the products in excellent yield (78–99%) at 850 W microwave heating within 1–5 min under eco‐friendly conditions. The