Electrophilic Fluorinating Reagent Mediated Synthesis of Fluorinated α-Keto Ethers, Benzil, and 6,6‘-Dialkoxy-2,2‘-bipyridines
作者:Sudha Manandhar、Rajendra P. Singh、Gary V. Eggers、Jean'ne M. Shreeve
DOI:10.1021/jo0258554
日期:2002.9.1
regioselectively, in excellent isolated yields. On the other hand, fluorinated alcohols did not react with MEC-31. Reaction of MEC-31 with an excess of diethylene glycol (7) gave the bipyridine derivative (8) in 88% isolated yield. Reaction of 8 either with diethylaminosulfurtrifluoride (DAST) or bis(2-methoxyethyl)aminosulfur trifluoride (Deoxofluor) readily produced the corresponding difluoro derivative
The extraction and transport of metal ions by 6,6′-diamino-2,2′-bipyridine derivatives
作者:Noriyuki Kishii、Koji Araki、Shinsaku Shiraishi
DOI:10.1039/dt9850000373
日期:——
6,6′-Disubstituted-2,2′-bipyridines were studied as to their ability to extract and transport transition- and heavy-metal ions. 6-Amino-6′-dodecyiamino-2,2′-bipyridine (3) has been found to be an excellent synthetic carrier for the specific transport of CuII and CdII ions through a liquid membrane. The effective transport of CdII ion by (3), in spite of its less effective extraction into the organic