Selective Functionalization of Aminoheterocycles by a Pyrylium Salt
作者:Daniel Moser、Yaya Duan、Feng Wang、Yuanhong Ma、Matthew J. O'Neill、Josep Cornella
DOI:10.1002/anie.201806271
日期:2018.8.20
The functionalization of aminoheterocycles by using a pyrylium tetrafluoroborate reagent (Pyry‐BF4) is presented. This reagent efficiently condenses with a great variety of heterocyclic amines and primes the C−N bond for nucleophilic aromatic substitution. More than 60 examples for the formation of C−O, C−N, C−S, or C−SO2R bonds are disclosed herein. In contrast to C−N activation through diazotization
Passerini, Bollettino Scientifico della Facolta di Chimica Industriale di Bologna, 1951, vol. 9, p. 27
作者:Passerini
DOI:——
日期:——
Hamed, Ezzat A.; El-Bardan, Ali A.; Saad, Esmat F., Journal of the Chemical Society. Perkin Transactions 2 (2001), 1997, # 11, p. 2415 - 2421
作者:Hamed, Ezzat A.、El-Bardan, Ali A.、Saad, Esmat F.、Gohar, Gamal A.、Hassan, Ghada M.
DOI:——
日期:——
Synthesis of Pyridylsulfonium Salts and Their Application in the Formation of Functionalized Bipyridines
作者:Vincent K. Duong、Alexandra M. Horan、Eoghan M. McGarrigle
DOI:10.1021/acs.orglett.0c03048
日期:2020.11.6
arylation of pyridylsulfides with good functional group tolerance was developed. To demonstrate synthetic utility, the resulting pyridylsulfonium salts were used in a scalable transition-metal-free coupling protocol, yielding functionalizedbipyridines with extensive functional group tolerance. This modular methodology permits selective introduction of functional groups from commercially available pyridyl