92075-16-6Relevant academic research and scientific papers
Synthesis and structural characterization of tris(2-oxo-1-tert- butylimidazolyl) and tris(2-oxo-1-methylbenzimidazolyl)hydroborato complexes: A new class of tripodal oxygen donor ligand
Al-Harbi, Ahmed,Sattler, Wesley,Sattler, Aaron,Parkin, Gerard
, p. 3123 - 3125 (2011)
A new class of tripodal L2X ligands that feature three oxygen donors, namely the tris(2-oxo-1-tert-butylimidazolyl) and tris(2-oxo-1- methylbenzimidazolyl)hydroborato ligands, [To But] and [To MeBenz], has been synthesized via the reactions of NaBH4 with the respective imidazolone. Structural and spectroscopic studies indicate that both [To But] and [ToMeBenz] are significantly more sterically demanding but less electron donating than the related [O3] donor ligand, [CpCo{P(O)(OEt)2}3].
Cyclic Ureate Tantalum Catalyst for Preferential Hydroaminoalkylation with Aliphatic Amines: Mechanistic Insights into Substrate Controlled Reactivity
Daneshmand, Pargol,Ro?ca, Sorin-Claudiu,Dalhoff, Rosalie,Yin, Kejun,Dipucchio, Rebecca C.,Ivanovich, Ryan A.,Polat, Dilan E.,Beauchemin, André M.,Schafer, Laurel L.
supporting information, p. 15740 - 15750 (2020/10/18)
The efficient and catalytic amination of unactivated alkenes with simple secondary alkyl amines is preferentially achieved. A sterically accessible, N,O-chelated cyclic ureate tantalum catalyst was prepared and characterized by X-ray crystallography. This
GROUP 5 METAL COMPLEXES FOR PRODUCING AMINE-FUNTIONALIZED POLYOLEFINS
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Page/Page column 34, (2019/12/15)
This application pertains to group 5 metal complexes having the structure of Formula I: and their potential utility in catalyzing amination of polyolefins having alkene groups.amine-
GROUP 5 METAL COMPLEXES FOR CATALYTIC AMINE FUNCTIONALIZATION
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Page/Page column 20-21, (2018/12/14)
This application pertains to group 5 metal complexes having the structure of Formula I; and their potential utility in catalyzing α-alkylation of secondary amine-containing moieties.
IMIDAZOLIDINONES AND ANALOGS EXHIBITING ANTI-CANCER AND ANTI-PROLIFERATIVE ACTIVITIES
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Paragraph 0363, (2014/10/29)
Described are compounds of Formula I which find utility in the treatment of cancer, autoimmune diseases and metabolic bone disorders through inhibition of c-FMS (CSF-1R), c-KIT, and/or PDGFR kinases. These compounds also find utility in the treatment of other mammalian diseases mediated by c-FMS, c-KIT, or PDGFR kinases.
Linear and macrocyclic ligands containing alternating pyridine and imidazolidin-2-one units
Meth-Cohn, Otto,Yan, Zegui
, p. 423 - 436 (2007/10/03)
Linear oligomers of alternating 2,6-disubstituted pyridine (P) and N,N′-disubstituted imidazolidine-2-one (I) units have been made rapidly and in high yield with up to nine repeating units, terminating in either pyridine or imidazolidin-2-one units, or one of each. Synthetic methods include: (1) the sodium hydride-mediated condensation of N-(tert-butyl)imidazolidin-2-one with 2,6-difluoropyridine (F-P-F) or with higher analogues such as F-PIP-F, to give IPI, IPIPI and IPIPIPI. (The tert-butyl protection is readily and quantitatively removed with acid.) (2) The caesium fluoride catalysed interaction of N,N′-[dimethyl(1,1,3-trimethylpropyl)]-protected IPI with But-IP-F sequentially leads firstly to IPIPIPI which by the same method reacts with F-P-F to give F-PIPIPIPIP-F. (3) F-P-F also reacts with 1,2-ethylenediamine (E) sequentially to give F-PEP-F, EPEPE and F-PEPEPEP-F while similar reactions starting from F-PIP-F give EPIPE and F-PEPIPEP-F in sequence. Alternative routes examined include: (1) the interaction of F-P-F with imidazole to give 2,6-bis(imidazol-1-yl)pyridine and salts therefrom followed by (unsuccessful) oxidation. (2) The reaction of 2,6-diaminopyridine with 2-chloroethyl isocyanate followed by cyclisation to give IPI. (3) The interaction of 2,6-diaminopyridine with oxalate esters (O) to give OPO or H2N-POP-NH2, the latter of which was reduced to H2N-PEP-NH2. Cyclisation of the linear assemblies was not successful. However macrocyclic systems were made by linking two IPI units with two ethoxyethyl or with two ethoxyethoxyethyl units. Also two F-PIP-F units were similarly reacted to give polyether-linked macrocycles. Mono- and bis-prop-2-ynylated IPI derivatives were made but could not be cyclised. Attempts to cyclise ethylenediamine and oxamide based systems were also unsuccessful. The linear and macrocyclic ligands showed calcium selectivity in a study of their metal complexing abilities.
Photochemical Elimination of Nitrogen from 1-(1-Alkenyl)-4-tert-butyl-1,4-dihydro-5H-tetrazol-5-ones. Competition between Addition of Methanol and Cyclization of a Dipolar Intermediate
Quast, Helmut,Nahr, Uwe
, p. 2761 - 2778 (2007/10/02)
The 4-tert-butyl-1-vinyltetrazolones 12a-c and the tetrazolones 13 and 14 are synthesized from the 5-chlorotetrazole 7 and the tetrazolone 9 via several routes.Bis(benzonitrile)palladium dichloride catalyses the O -> N-Claisen rearrangement 8 -> 11, the a
