Global ETD Search
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Showing 1 to 5 of 5 for “"tetramethylguanidine"”.
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C(sp2)–H Functionalizations Employing 2-Aminophenyl-1H-pyrazole as a New Removable Directing Group
… was employed as the copper source, 1,1,3,3-tetramethylguanidine (TMG) as an organic base, the reaction, optimally carried out overnight in DMSO at 80 °C in open air, produced a variety of products in moderate to excellent yields. In addition, C(sp2)–H bond chlorination has been developed by …
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Improved Fabrication and Quality Control of Substrate Integrated Microelectrode Arrays
… the KOH reprocessing solution was replaced with tetramethylguanidine to prevent damage to the quartz. The problems associated with gold electroplating were solved via the addition of a pulsed-DC application of gold in a new citrate buffered electroplating solution.
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Nuclear magnetic resonance studies of boron trihalide complexes of 1,1-BIS (dimethylamino) ethylene and related bases
… (DME) , t etramethylurea (TMU), tetramethylguanidine (TMG) , and pentamethylguanidine (PMG) and also mixed boron t r ihalide adducts of DME have been investigated by 1H and 19F NMR spectroscopy. Both nitrogen and the C-Q-H carbon of DME are possible donor a toms to boron trihal …
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Bis-and tris (amidine) fluoroboron cations and related systems studies by Multinuclear NMR and fast atom bombardment mass spectometry
… systems which have been previously studied. Tetramethylguanidine, oxazolines and thiazolines can also produce similar reactions in D/BF3/BCI3 systems, but no significant BFnC4-n- species were observed. As well as influences of their basicity and their steric hindrance, N=C-R(X) (X = N, 0 or …
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Hydrogen production from model complexes of the [FeFe]- and [NiFe]-hydrogenase active sites
… the iron hydride does not deprotonate with tetramethylguanidine (pKa = 26) and requires the strongacid HBF4•Et2O (pKa = -2) for its formation. Upon incorporation of the proposed azadithiolate cofactor, [(H)Fe2(adt)(CO)2(dppv)2]+ was observed to have a significantly smaller barrier for proton …