Odorless Isocyanide Chemistry: An Integrated Microfluidic System for a Multistep Reaction Sequence
作者:Siddharth Sharma、Ram Awatar Maurya、Kyoung-Ik Min、Guan-Young Jeong、Dong-Pyo Kim
DOI:10.1002/anie.201303213
日期:2013.7.15
continuous‐flow microfluidic setup enables in situ generation, extraction, separation, and reaction of foul‐smelling isocyanides with little exposure to the surroundings. Isocyanides were generated by dehydration of the corresponding N‐substituted formamides, and several representative isocyanide‐based organic reactions were successfully performed. DIPEA=N,N‐diisopropylethylamine.
Silica gel promoted environment-friendly synthesis of α-amino amidines and regioselective transformation of α-amino amidines into amidino substituted indazoles
作者:A. Sagar、Venkata Nagarjuna Babu、Duddu. S. Sharada
DOI:10.1039/c5ra02491a
日期:——
Ugi-type strategy (U-3CR) for the synthesis of a wide variety of α-amino amidines has been developed by using silica gel as promoter, and a novel access to amidino substituted indazoles in a regioselective manner is presented via iron(III) catalyzed post Ugi cyclization strategy. This method allows an easy construction of amidino substituted indazoles in good yields with broad substrate scope starting from
A facile and efficient synthetic protocol for the synthesis of alpha-amino amidines has been developed using a molecular iodine-catalyzed three-component coupling reaction of isocyanides, amines, and aldehydes. The presented strategy offers the advantages of mild reaction conditions, low environmental impact, clean and simple methodology, high atom economy, wide substrate scope and high yields.