Synthesis of (Hexafluoro-tert-butyl)amine and Molybdenum(VI) (Hexafluoro-tert-butyl)imido Complexes

1995 ◽  
Vol 34 (13) ◽  
pp. 3553-3554 ◽  
Author(s):  
Michael Buchmeiser ◽  
Richard R. Schrock
Keyword(s):  
Tert Butyl ◽  
Imido Complexes ◽  
Butyl Amine

scholarly journals Substituted tetra-2,3-pyrazinoporphyrazines. Part I. Angular annelation of tetra-2,3-quinoxalinoporphyrazine

1996 ◽  
Vol 74 (4) ◽  
pp. 508-515 ◽  
Author(s):  
Svetlana V. Kudrevich ◽  
Johan E. Van Lier ◽  
Maria G. Galpern ◽  
Evgeny A. Luk'yanets
Keyword(s):  
Spectral Properties ◽  
Metal Salt ◽  
Metal Salts ◽  
Gel Chromatography ◽  
Hypsochromic Shift ◽  
Tert Butyl ◽  
Butyl Amine ◽  
Silica Gel Chromatography ◽  
Derivatives Of ◽  
Aggregation Phenomenon

Several derivatives of 2,3-dicyanopyrazine were prepared via the condensation of o-quinones with diaminomaleodinitrile. Benzo[f]quinoxaline-2,3-dinitrile was obtained from 1,2-naphthoquinone, and a series of isomeric, di-tert-butyl substituted 5,6-(9,10-phenanthro)-2,3-dicyanopyrazines were prepared from the corresponding di-tert-butyl-9,10-phenanthrenequinones. Complexation of benzo[f]quinoxaline-2,3-dinitrile, and unsubstituted 5,6-(9,10-phenanthro)-2,3-dicyanopyrazine, with an appropriate metal salt yielded metal complexes of tetra-2,3-(benzo[f]quinoxalino)porphyrazine and tetra-2,3-[5,6-(9,10-phenanthro)]porphyrazine, respectively. Metal-free tetra-2,3-[5,6-(9,10-phenanthro)porphyrazine was obtained from the dilithium derivative by demetallation in HCl. These compounds have limited solubility in organic solvents, such as quinoline, and are aggregated in solutions. To eliminate the aggregation phenomenon and to determine the spectral properties of angularly annelated naphthalocyanine aza analogs, we prepared several isomeric tetra-2,3-[5,6-(di-tert-butyl-9,10-phenanthro)pyrazino]porphyrazines. These octa(tert-butyl) substituted complexes were synthesized via complexation of di-tert-butyl substituted 5,6-(9,10-phenanthro)-2,3-dicyanopyrazines with metal salts in the presence of urea, quinoline, and tri(n-butyl)amine, and purified by silica gel chromatography. They are soluble in chloroform and substantially monomerized in solutions. A hypsochromic shift of the Q-band of octaaza naphthalocyanines versus their carbocyclic analogs was observed for all aza analogs, with the extent of the shift depending on the composition of the aromatic macrocycle. Thus, the first angularly annelated benzo ring addition causes a hypsochromic shift (∼25 nm) of the Q-band of tetra-2,3-quinoxalinoporphyrazine, whereas addition of a second condensed benzo ring has little effect. Key words: phthalocyanine, aza analog, tetra-2,3-quinoxalinoporphyrazine, angular annelation.

Tert-butyl amine borane complex: An unusual application of a reducing agent on model molecules of cellulose based materials

2009 ◽  
Vol 10 (3) ◽  
pp. 356-361 ◽  
Author(s):  
Cecilia Sanna ◽  
Armida Sodo ◽  
Giuseppe Laguzzi ◽  
Giovanna Mancini ◽  
Marina Bicchieri
Keyword(s):  
Reducing Agent ◽  
Tert Butyl ◽  
Butyl Amine

METALLO-ORGANIC COMPOUNDS CONTAINING METAL–NITROGEN BONDS: PART IV. SOME BIS-(PRIMARY AMINO)-TITANIUM COMPOUNDS

1963 ◽  
Vol 41 (1) ◽  
pp. 134-138 ◽  
Author(s):  
D. C. Bradley ◽  
E. G. Torrible
Keyword(s):  
General Formula ◽  
Organic Compounds ◽  
Primary Amines ◽  
Nitrogen Compounds ◽  
Soluble Polymers ◽  
Tert Butyl ◽  
Primary Amino ◽  
Butyl Amine ◽  
Nitrogen Bonds ◽  
Titanium Compounds

The aminolysis reactions involving primary amines with either Ti(NMe2)4 or Ti(NEt2)4 have been studied. The primary amines behave as bifunctional reactants, forming colored, insoluble, non-volatile bis-(primary amino)-titanium compounds Ti(NR)2 which (except for R = C6H5) are highly reactive towards water or alcohols. With n-butylamine, some soluble polymers of the general formula Tix(NBun)2x−2(NEt2)4 were isolated. With tert-butyl-amine the dimers Ti2(NBut)2(NMe2)4 and Ti2(NBut)2(NHBut)2(NMe2)2 were obtained. The structures of these polymeric metal–nitrogen compounds are discussed.

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