Synthesis and properties of the novel .eta.4-trimethylenemethane compounds [.eta.4-C(CH2)3]Fe(CO)2L (L = tertiary phosphines, tert-butyl isocyanide)

1991 ◽  
Vol 10 (9) ◽  
pp. 3114-3119 ◽  
Author(s):  
Luc. Girard ◽  
Joseph H. MacNeil ◽  
Adnan. Mansour ◽  
Antony C. Chiverton ◽  
John A. Page ◽  
...  
Keyword(s):  
The Novel ◽  
Tert Butyl ◽  
Tertiary Phosphines

ChemInform Abstract: Nucleophilic Addition of Phosphine to 1-(tert-Butyl)-4-vinylbenzene: A Short-Cut to Bulky Secondary and Tertiary Phosphines and Their Chalcogenides.

ChemInform ◽  
2009 ◽  
Vol 40 (13) ◽  
Author(s):  
Nina K. Gusarova ◽  
Svetlana F. Malysheva ◽  
Vladimir A. Kuimov ◽  
Nataliya A. Belogorlova ◽  
Valentina L. Mikhailenko ◽  
...  
Keyword(s):  
Nucleophilic Addition ◽  
Tert Butyl ◽  
Tertiary Phosphines

Azaborolyl-Komplexe, 27 / Azaborolyl Complexes, 27

1992 ◽  
Vol 47 (5) ◽  
pp. 635-639 ◽  
Author(s):  
Günter Schmid ◽  
Wolfgang Meyer-Zaika
Keyword(s):  
Mass Spectrometry ◽  
Benzene Solution ◽  
Stable Complex ◽  
Intramolecular Rearrangement ◽  
The Novel ◽  
Intramolecular Coordination ◽  
Tert Butyl ◽  
Nmr Data ◽  
Stereoselective Reactions ◽  
Ab Ring

Alkenyl substituted 1H-1,2-azaborolyl (Ab) complexes are promising candidates for stereoselective reactions, due to the chirality of the AbM moiety and the intramolecular coordination of the alkenyl group to the metal atom. The synthesis of [1-tert-butyl-2-methy1-3-(4-penten- l -y1)-η5-1H-1,2-azaborolyl]-bis(triphenylphosphine)rhodium (3) is achieved by the reaction of AbLi (2) [from AbH (1)] with (Ph3P)3RhCl. In benzene solution one PPh3 ligand of 3 is substituted by the C=C group of the pentenyl substituent. Simultaneously the η5-coordination of the Ab ring changes to an allylic η3-coordination forming 4. Steric reasons seem to be responsible for this intramolecular rearrangement. The shorter 2-propen-1-yl substituent is unable to act in the same way and therefore only forms the stable complex [1-tert-butyl-2-methyl-3-(2-propen- l -yl)-η5-1H-1,2-azaborolyl]-bis(triphenylphosphine)rhodium (7). Mass spectrometry, 1H, 11B and 31P NMR data were used to characterize the novel complexes.

Synthesis and properties of the 3-tert-butyl-7-trifluoromethyl-1,4-dihydro-1-phenyl-1,2,4-benzotriazin-4-yl radical

2015 ◽  
Vol 39 (6) ◽  
pp. 4783-4789 ◽  
Author(s):  
Yusuke Takahashi ◽  
Youhei Miura ◽  
Naoki Yoshioka
Keyword(s):  
Columnar Structure ◽  
The Novel ◽  
Trifluoromethyl Group ◽  
Ferromagnetic Interaction ◽  
Tert Butyl

The novel 3-tert-benzotriazinyl radical carrying the trifluoromethyl group was synthesized and exhibited pure 1D ferromagnetic interaction in the columnar structure.

scholarly journals The Synthesis of Two Combinatorial Libraries Using a 4-(2-Thienyl)-pyrrole Template

2002 ◽  
Vol 55 (12) ◽  
pp. 789 ◽  
Author(s):  
Rohan A. Davis ◽  
Anthony R. Carroll ◽  
Ronald J. Quinn
Keyword(s):  
Reductive Amination ◽  
Combinatorial Libraries ◽  
Solution Phase ◽  
Primary Amines ◽  
The Novel ◽  
Compound Library ◽  
Phase Synthesis ◽  
Parallel Solution ◽  
Tert Butyl ◽  
Solution Phase Synthesis

The synthesis of the novel biaryl compound, 4-(2-thienyl)-1H-pyrrole-2-carbaldehyde (1), by Suzuki–Miyaura coupling conditions is reported. Compound (1) was subsequently used as a combinatorial template in the parallel solution-phase synthesis of an amine and imine compound library. The amine library was produced using reductive amination conditions, and purification was achieved by a liquid–liquid partition followed by silica chromatography to afford ten amine analogues. The imine library consisted of five compounds, which were synthesized using volatile primary amines that allowed purification by evaporation. The synthesis of the novel and related biaryl carbaldehyde, tert-butyl-2-(5-formyl-1H-pyrrol-3-yl)-1H-pyrrole-1-carboxylate (2) is also reported.

Synthesis and reactivity of the stable silylene N,N'-di-tert-butyl-1,3-diaza-2-sila-2-ylidene

2000 ◽  
Vol 78 (11) ◽  
pp. 1526-1533 ◽  
Author(s):  
Michael Haaf ◽  
Thomas A Schmedake ◽  
Bryan J Paradise ◽  
Robert West
Keyword(s):  
Solid State ◽  
Alkali Metals ◽  
The Novel ◽  
Concentrated Solutions ◽  
Tert Butyl ◽  
Proton Source ◽  
The One ◽  
Stable Silylene

The synthesis and several reactions of the stable silylene 1 (N,N'-di-tert-butyl-1,3-diaza-2-sila-2-ylidene) are reported. Overreduction of 1 with alkali metals results in the formation of a dimeric dianion, which can be trapped with a proton source to give the dihydride derivative 9. In the solid state or in concentrated solutions, 1 undergoes a reversible conversion into the novel tetrameric disilene, 10. 1 reacts with ethanol, phenol, and water via insertion into the O—H bond, and with iodomethane by insertion into the C—I bond. A reaction of 1 with the diene 2,3-dimethyl-1,3-butadiene affords the silacyclopentene, 15. This reaction is markedly different from the one found for the unsaturated analog of the silylene, 2, which catalyzes the conversion of this diene into a highly cross-linked polymer.Key words: silylene, carbene analog, disilene, divalent compounds, N-heterocycles.

scholarly journals A Pentamethylcyclopentadienyl Ligand Functionalized with a Pendant Pyridyl Group; Crystal Structure of its Ferrocene-Type Iron Complex

1994 ◽  
Vol 49 (5) ◽  
pp. 683-686 ◽  
Author(s):  
Ulrich Siemeling ◽  
Beate Neumann ◽  
Hans-Georg Stammler
Keyword(s):  
Crystal Structure ◽  
Iron Complex ◽  
The Novel ◽  
Subsequent Reaction ◽  
Triclinic Space Group ◽  
Pyridyl Group ◽  
Space Group ◽  
Tert Butyl

The novel cyclopentadiene HMe4C5CH2CMe2py [py = 2-(4-tert-butyl)pyridyl] 2H has been prepared from tetramethylfulvene and lithiated 2-isopropyl-4-tert-butylpyridine. Lithiation of 2H with BunLi and subsequent reaction with FeCl2 yields the ferrocene (2)2Fe, which crys­tallizes in the triclinic space group P1̅ with a = 8.368(1), b = 8.468(1), c = 14.313(1) Å, α = 80.64(1), β = 86.67(1), γ = 80.12(1)° and V = 985.4(2) Å3.

A multinuclear NMR study of the cycloaddition reaction of SNSAsF6 with tert-butylphosphaacetyline (CH3)3CCP leading to the 5-tert-butyl-1,3,2,4-dithiazaphospholium cation; a preliminary account of the novel exchange of a cyclic phosphorus by nitrogen in the reaction of with azide N3− leading to 5-tert-butyl-1,3,2,4-dithiadiazolyl

1995 ◽  
Vol 73 (8) ◽  
pp. 1312-1320 ◽  
Author(s):  
Simon Parsons ◽  
Jack Passmore ◽  
Xiaoping Sun ◽  
Manfred Regitz
Keyword(s):  
Sulfur Dioxide ◽  
Low Temperature ◽  
Cycloaddition Reaction ◽  
The Novel ◽  
Multinuclear Nmr ◽  
Tert Butyl ◽  
Nmr Study ◽  
Preliminary Account ◽  
Net Replacement

The cycloaddition reaction of SNS+ (as the AsF6− salt) with 5-tert-butylphosphaacetyline (CH3)3CCP in sulfur dioxide solution at −60 °C gave [Formula: see text], the first identified example of a 1,3,2,4-dithiazaphospholium heterocycle [Formula: see text]. The cycloadduct was characterized by multinuclear NMR (1H, 13C, 14N, 15N, 31P) spectroscopy at low temperature. Reduction of 6π [Formula: see text] in situ with SbPh3 in the presence of Me4NCl led to a radical, which may be the 7π tert-butyl-1,3,2,4-dithiazaphospholyl [Formula: see text]. The reaction of 5-tert-butyl-1,3,2,4-dithiazaphospholium [Formula: see text] with azide N3− surprisingly gave the previously known 5-tert-butyl-1,3,2,4-dithiadiazolyl [Formula: see text]. The conversion of [Formula: see text] to [Formula: see text] by the net replacement of a cyclic phosphorus with nitrogen is unprecedented. Keywords: dithiazaphospholium, dithiazaphospholyl, cycloaddition, multinuclear NMR, ESR.

Nucleophilic additon of phosphine to 1-(tert-butyl)-4-vinylbenzene: a short-cut to bulky secondary and tertiary phosphines and their chalcogenides

2008 ◽  
Vol 18 (5) ◽  
pp. 260-261 ◽  
Author(s):  
Nina K. Gusarova ◽  
Svetlana F. Malysheva ◽  
Vladimir A. Kuimov ◽  
Nataliya A. Belogorlova ◽  
Valentina L. Mikhailenko ◽  
...  
Keyword(s):  
Tert Butyl ◽  
Tertiary Phosphines
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