Results 31 to 40 of about 82,167 (149)
Modulating NHC catalysis with fluorine
Beilstein Journal of Organic Chemistry, 2013 Fluorination often confers a range of advantages in modulating the conformation and reactivity of small molecule organocatalysts. By strategically introducing fluorine substituents, as part of a β-fluoroamine motif, in a triazolium pre-catalyst, it was ...
Yannick P. Rey, Ryan Gilmour
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Effects of water and fluorine on the viscosity of albite melt at high pressure: a preliminary investigation [PDF]
, 1985 The viscosities of fluorine- and water-bearing melts based on albite composition have been determined at 7.5, 15 and 22.5 kbar by the falling-sphere method. All melt viscosities decrease isothermally with increasing pressure.
Mysen, Bjørn O., Dingwell, Donald B.
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Stereoselectively fluorinated N-heterocycles: a brief survey
Beilstein Journal of Organic Chemistry, 2013 The stereoselective incorporation of fluorine atoms into N-heterocycles can lead to dramatic changes in the molecules’ physical and chemical properties.
Xiang-Guo Hu, Luke Hunter
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Hot-Carrier Stressing of NPN Polysilicon Emitter Bipolar Transistors Incorporating Fluorine
, 2003 The effects of fluorine on the hot-carrier induced degradation in low-thermal-budget polysilicon emitter NPN bipolar transistors have been examined. Forward Gummel plots, base emitter (BE) diode characteristics, and stress currents were measured during ...
Ashburn, P. +11 more
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Beilstein Journal of Organic Chemistry, 2013 Regioselective conjugate 1,4-trifluoromethylation of α,β-unsaturated ketones by the use of shelf-stable electrophilic trifluoromethylating reagents, S-(trifluoromethyl)diphenylsulfonium salts and copper under mild conditions is described. A wide range of
Satoshi Okusu +3 more
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Molecules, 2019 The organo-catalyzed enantioselective benzylation reaction of α-trifluoromethoxy indanones afforded α-benzyl-α-trifluoromethoxy indanones with a tetrasubstituted stereogenic carbon center in excellent yield with moderate enantioselectivity
Yumeng Liang +3 more
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Beilstein Journal of Organic Chemistry, 2013 A practical route for the stereoselective synthesis of (2S,3S)-5,5,5-trifluoroisoleucine (L-5-F3Ile) and (2R,3S)-5,5,5-trifluoro-allo-isoleucine (D-5-F3-allo-Ile) was developed.
Holger Erdbrink +6 more
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Joy and Flustration with Organofluorine Compounds – A Fluorous Autobiography
CHIMIA, 2014 An overview is given about our work on fluoro-organic compounds, published or described in PhD theses between 1977 and 2013. After a discussion of structural F-effects and F-tagging applications the material is ordered by the various areas of ...
Dieter Seebach
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Fluorine in silicate glasses: A multinuclear nuclear magnetic resonance study [PDF]
, 1992 Anhydrous nepheline, jadeite, and albite glasses doped with F as well as hydrous F-containing haplogranitic glasses were investigated using 19F combined rotation and multiple-pulse spectroscopy; 19F → 29Si cross-polarization/magic angle spinning (MAS ...
Merwin, Lawrence +5 more
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Beilstein Journal of Organic Chemistry, 2014 The syntheses of palmitic acids and a nonadecane are reported with CF2 groups located 1,3 or 1,4 to each other along the aliphatic chain. Specifically 8,8,10,10- and 8,8,11,11-tetrafluorohexadecanoic acids (6b and 6c) are prepared as well as the singly ...
Yi Wang +3 more
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