Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 11 of 11 for “"guanidines"”.
-
Alkyl guanidines and nitroguanidines
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Chemistry, 1930
-
Reaction of CS2 and CO2 with Amidines and Guanidines
Neutral organic bases such as amidines and guanidines are very useful in studies of the reactivity of heterocumulenes such as carbon disulfide (CS2) and carbon dioxide (CO2) to build C-C or C-N bonds. Reaction of amidines with CS2 in the absence of water and without adding desulfurization reagents …
-
A Promiscuous Path to Novel Guanidines: Arginine-Modifying Enzymes as Key Synthetic Players
The study falls into two sections. The 1st Section describes an efficient enzyme-catalysed process for the chemoselective (m)ethylation of various guanidine-containing molecules, including arginine analogues, derivatives, and oligopeptides. The process relies on the promiscuous methyltransferase …
-
PALLADIUM-BASED SYSTEMS IN HOMOGENEOUS CATALYSIS: EXPLORING NITROGEN LIGANDS FOR CO-MEDIATED REACTIONS
… heterocycles. Furthemore, the use of guanidines as ligands in carbonylation and alkoxycarbonylation of olefins has been attempted.
-
Diastereoselective Lithiation-Substitution of N-Silyl-Protected-(S)-Tetrahydro-1H-pyrrolo[1,2-c]imidazole-3(2H)-ones and Applications of Their Derivatives
… serve as precursors to N-phenyl chiral bicyclic guanidines or as NHC precursors for synthesis of corresponding complexes.
-
Diastereoselective Lithiation-Substitution of N-Silyl-Protected-(S)-Tetrahydro-1H-pyrrolo[1,2-c]imidazole-3(2H)-ones and Applications of Their Derivatives
… serve as precursors to N-phenyl chiral bicyclic guanidines or as NHC precursors for synthesis of corresponding complexes.
-
Guanidinium Compounds: Synthesis, Oxoanion Binding, and Cellular Delivery
… Chapter 4, I describe the synthesis of biaryl-bisguanidines. These guanidines are inspired by axially constrained organometallic catalyst ligands and have applications in oxoanion binding as dications and organometallic catalysts as dianions. I detail initial forays into determining the binding …
-
Synthesis and Determination of the Absolute Configuration of the Bicyclic Guanidine Core of Batzelladine A and the Development of a Novel [4+2] Inverse Electron Demand Hetero Diels -Alder Cycloaddition and Its Application Toward the Synthesis of the Tricyclic Guanidine Fragment Within Batzelladine A
… cyclic thioimidates for access to functionalized guanidines which were shown to be possible advanced intermediates for the functionalized tricyclic guanidine contained within batzelladine A.
-
The Nucleophilic Reaction of O-Methylisourea With Organic Amines
No abstract prepared.
-
Novel N-heterocyclic activations mediated by magnesium reagents having sterically hindered ligands
… to propose a possible catalytic cycle. Guanidines [(NHR)C(=NR)NPh2] (R =Cy, 48, R = iPr, 49) could be prepared in good-moderate yields (64-65%) by reacting NHPh2 with RN=C=NR using 30 as a catalyst.