1571-74-0

Usage

Chemical compound

Diaminobenzene derivative

Usage

Reagent in organic synthesis

Physical appearance

White to light yellow solid

Molecular weight

315.57 g/mol

Application

Preparation of trimethylsilyl-protected primary amines

Application

Precursor for the synthesis of various organic compounds

Potential application

Material science for silicon-containing polymers and materials

Upstream product

• 75-77-4 chloro-trimethyl-silane 
• 106-50-3 1,4-phenylenediamine 

Downstream Products

• 249931-55-3 [(CH₃)2N]3ZrN[Si(CH₃)3]C₆H₄N[Si(CH₃)3]Zr[N(CH₃)2]3 
• 249931-57-5 C₁₂N₄Zr₂H₈[Si(CH₃)3]4[N(CH₃)2]4 
• 139041-55-7 C₆H₄(NWCl₄)2 
• 82765-03-5 p-Bis(trimethylsilyl)schwefel(IV)diimido-benzol 
• 25811-68-1 N,N,N',N'-tetrakis(trimethylsilyl)-1,4-phenylenediamine 

Relevant academic research and scientific papers

Synthesis and application of some dianilinosilanes, bis (trimethylsilyl) phenylenediamines and dialkyl benzo-1,3,2-diazasilolines as antioxidants

A number of dialkyl or diphenyl dianilinosilanes, bis (trimethylsilyl) phenylenediamines and dialkyl benzo-1,3,2-diazasilolines were synthesized and used as antioxidants for lubricating base oils. Thermal analysis methods (DSC, TG and DTG) and IR techniqu

Formation of Aromatic O-Silylcarbamates from Aminosilanes and Their Subsequent Thermal Decomposition with Formation of Isocyanates

A novel phosgene-free route to different isocyanates starts from CO2 and aminosilanes (cf. silylamines) to form so-called carbamoyloxysilanes (O-silylcarbamates), i. e., compounds with the general motif R1R2N?CO?O?SiR3R4R5 as potential precursors. We focused on the insertion reaction of CO2 into Si?N bonds of substrates with cyclic (mostly aromatic) amine substituents, i. e., PhNHSiMe3, (PhNH)2SiMe2, PhCH2NHSiMe3, p-(MeO)C6H4NHSiMe3, o-C6H4(NHSiMe3)2, 1,2-C6H10(NHSiMe3)2, o-C6H4(NHSiMe3)(CH2NHSiMe3) and 1,8-C10H6(NHSiMe3)2. Compared to previously investigated aminosilanes these reactions are hindered due to the reduced nucleophilicity/basicity of the N-atoms. Whereas slightly increased CO2 pressure (8 bar) and prolonged reaction times (24 h) were sufficient to overcome hindrance of the insertion into, e. g., PhNHSiMe3, intermolecular effects in some two-fold NHSiMe3 functionalized substrates led to partial mono-insertion (e. g., into o-C6H4(NHSiMe3)(CH2NHSiMe3)) or intra-molecular condensation of the intermediate insertion product in case of 1,8-C10H6(NHSiMe3)2 to form 1H-perimidin-2(3H)-one and other side products. Thermal treatment of mono-silylated O-silylcarbamates RHN?CO?O?SiR’3 resulted mainly in the formation of substituted ureas (RHN)2CO, whereas desired isocyanates could not be detected in these cases. Therefore, we continued our studies focussing on N,O-bissilylated precursors, which were obtained by an additional N-silylation of the O-silylated carbamates. This allowed the successful formation of isocyanates. As a sole byproduct hexamethyldisiloxane is formed. In all cases, known as well as yet unknown substances were characterised by 1H, 13C and 29Si NMR spectroscopy, along with X-ray diffraction analysis for crystallized solids.

Structures of Sterically Overcrowded and Charge-Perturbed Molecules, 38. - The Different Conformations of N-Trimethylsilyl-Substituted p-Phenylenediamine Derivatives: Investigation of Single Crystals and in the Gas Phase

The ESR-proven generation of a Wurster's Blue radical anion by one-electron reduction of N,N,N',N'-tetrakis(trimethylsilyl)-p-phenylenediamine is rationalized by a posterior single-crystal structure determination of the neutral molecule, which demonstrate