Results 71 to 80 of about 86,737 (136)
Diastereoselectivity in the Staudinger reaction of pentafluorosulfanylaldimines and ketimines
Beilstein Journal of Organic Chemistry, 2013 β-Lactams were diastereoselectively formed by the reaction of SF5-containing aldimines, or an SF5-containing ketimine, with benzyloxyketene in a conrotatory ring closure process. Imine formation and cyclization were possible in spite of the acidification
Alexander Penger +3 more
doaj +1 more source
Estudos de reações de transesterificação com lipases imobilizadas e determinação de coeficiente de difusão de ésteres em organo-gel / [PDF]
, 1999 Tese (Doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas.As lipases de Chromobacterium viscosum, Pseudomonas sp, Microbial e Lipolase, imobilizadas em organo-gel (MBG) de hexano foram usadas como ...
João, Jair Juarez
core
The preferred conformation of erythro- and threo-1,2-difluorocyclododecanes
Beilstein Journal of Organic Chemistry, 2012 Cyclododecane adopts a square-like structure with corner and edge CH2 groups. In this study erythro- and threo-1,2-difluorocyclododecanes were prepared to explore whether the two vicinal C–F bonds, with different relative configurations, preferably ...
Yi Wang +4 more
doaj +1 more source
Fluorine-19 Magnetic Resonance Imaging of activated platelets
, 2020 A research letter describing an innovative method for imaging activated platelets using advanced fluorine‐19 magnetic resonance imaging.
J Palasubramaniam (10049237) +11 more
core +1 more source
Annals of West University of Timisoara: Physics, 2018 Photocatalytic degradation of organic pollutants from wastewater using titanium dioxide is recognized as an efficient process. To be feasible, this process needs to be solar- or visible light -activated, but, due to its wide band gap energy, titanium ...
Tismanar Ioana +3 more
doaj +1 more source
Synthesis of enones, pyrazolines and pyrrolines with gem-difluoroalkyl side chains
Beilstein Journal of Organic Chemistry, 2013 Starting from easily accessible gem-difluoropropargylic derivatives, a DBU-mediated isomerisation affords enones in fair yields with a gem-difluoroalkyl chain.
Assaad Nasr El Dine +8 more
doaj +1 more source
Fluorine-Containing Donor−Acceptor Complex: Infinite Chain Formed by Oxygen···Iodine Interaction
, 2016 Fluorine-Containing Donor−Acceptor Complex: Infinite Chain Formed by Oxygen···Iodine ...
Qianli Chu (2026543) +4 more
core +2 more sources
The influence of fluorine substitution on some enzyme mediated reactions [PDF]
, 1997 The replacement of a hydrogen or hydroxy group with a fluorine atom is a popular strategy to alter the activity of biologically important molecules, as their similar sizes mean that such a replacement has little steric impact.
Bridge, Colin Francis
core
Misconceptions on fluoronium ions and hypervalent fluorine cations
, 2017 In a recent publication (Science, 2013, 340, 57), indirect experimental evidence was presented for the transient generation in solution of a fluorine atom symmetrically bonded to two carbon atoms.
Christe, Karl O. +10 more
core +1 more source
, 2008 In this study, electron-withdrawing fluoro-functional ligand and its tetrakis 2,9,16,23-4-(2,3,5,6-tetrafluoro)-phenoxy-phthalocyaninatometal (II) complexes, (ZnPcOBzF(16), CuPcOBzF(16) and CoPcOBzF(16)) (Bz: benzene) which are organo-soluble have been ...
KOCA, ATIF
core +1 more source