Results 81 to 90 of about 12,560 (208)

Discogene Monothioscyllitol-Derivate

open access: yesCHIMIA, 1986
Two derivatives (3 and 4) of the hitherto unknown 1-deoxy- 1-mercapto-scyllo-inositol (monothioscyllitol), a sulfur analogue of the naturally occurring scyllo-inositol, have been prepared by nucleophilic substitution reaction from a hexaester of myo ...
Bernd Kohne   +2 more
doaj   +1 more source

PMR polyimides with improved high temperature performance [PDF]

open access: yes
Studies were performed to investigate the effect of substituting a hexafluoro isopropyl idene connecting group for a carbonyl group of a PMR polyimide monomeric reactant on the thermo-mechanical properties processability of graphite fiber reinforced PMR ...
Alston, W. B., Vannucci, R. D.
core   +1 more source

Fluorinated esters of polycarboxylic acids [PDF]

open access: yes, 1973
Fluorine containing esters of polycarboxylic acids are discussed.
Breed, L. L., Elliott, R. L.
core   +1 more source

1-Fluoro-2,5-dimethoxy-4-nitrobenzene [PDF]

open access: yes, 2018
1-Fluoro-2,5-dimethoxy-4-nitrobenzene was synthesized in 90% yield by the reaction of commercial 2-fluoro-1,4-dimethoxybenzene with nitric acid. The structure was confirmed by X-ray crystallography.
Aldabbagh, Fawaz   +2 more
core   +2 more sources

Lower-curing-temperature PMR polyimides [PDF]

open access: yes
Partial substitution of a p-aminostyrene end-cap for the monomethyl ester of 5-norbornene-2, 3-dicarboxylic acid lowered the final cure temperature of typical PMR resins from 600 F to 500 F.
Delvigs, P.
core   +1 more source

Synthesis of Wholly Alicyclic Polyimides from N-Silylated Alicyclic Diamines and Alicyclic Dianhydrides

open access: yesSynthesis of Wholly Alicyclic Polyimides from N-Silylated Alicyclic Diamines and Alicyclic Dianhydrides
identifier:oai:t2r2.star.titech.ac.jp ...
  +3 more sources

Design and Theoretical Study of D–A–π–A Organic Sensitizers with [1,2,5]Thiadiazolo[3,4-c]pyridine, [1,2,5]Selenadiazolo[3,4-c]pyridine, and [1,2,5]Oxadiazolo[3,4-c]pyridine π Component

open access: yesJournal of Chemistry, 2015
The study concerns molecular design and theoretical study of novel prospective organic sensitizers based on D–A–π–A concept. A modification of the concept (DA–π–A) and new ways for design of organic sensitizers are proposed.
O. I. Bolshakov   +4 more
doaj   +1 more source

Characterization of type III kerogen from Tyrolean shale (Hahntennjoch, Austria) based on its oxidation products [PDF]

open access: yesJournal of the Serbian Chemical Society, 2008
A 29-step alkaline permanganate degradation of type III kerogen from Tyrolean (Hahntennjoch, Austria) oil shale was performed. A high yield of oxidation products was obtained (93.7 % relative to the original kerogen): 0.5 % neutrals and bases, 19.5 ...
D. VITOROVIC   +3 more
doaj  

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