54813-78-4Relevant articles and documents
Transition-Metal-Free Three-Component Synthesis of Tertiary Aryl Amines from Nitro Compounds, Boronic Acids, and Trialkyl Phosphites
Roscales, Silvia,Csáky, Aurelio G.
supporting information, p. 111 - 117 (2019/11/16)
The synthesis of aromatic amines is of continuous interest in chemistry. An exceptionally versatile three-component reaction that directly transforms inexpensive nitro compounds, boronic acids, and trialkyl phosphites into tertiary aromatic amines has been realized. The reaction tolerates alkyl and aryl substituents on the nitro and boronic acid moieties, as well as functionalized phosphites. No transition-metal catalysis is required. The method is orthogonal to other classical metal-catalyzed syntheses since it tolerates the presence of halogens, and also permits the synthesis of functionalized compounds such as α-amino ester derivatives. (Figure presented.).
Synthesis and characterization of some azo-anil dyes
Neubert,Hummel,Bhatt,Keast,Lackner,Margerum,Sherman
, p. 287 - 300 (2007/10/02)
A number of azo-anil dyes of the type RR'N-φ-N--N-φ-N--6CH-φ-Y with Y=CN or NO2 and R,R′=Me, Me; Me,C6H13; Et,Pr and C6H13,C6,H13 were synthesized by reactions of the aminosubstituted nitrosoamine with phenylene diamine followed by condensation of the resulting aniline with the appropriate 4-substituted benzaldehyde. Mesomorphic properties were determined both by hot-stage polarizing microscopy and DSC. A nematic phase was observed only when R=R′=CH3 while smectic A phases occurred in the other homologs. Melting temperatures were greater than 130°. All had colors ranging from red to orange with UV λmax ranging from 448-459 nm and ε 2.20-3.67 E+4. The ΔH melting values ranged from 16.8 to 30.7 KJ/mole and solubilities in a BDH-E7 liquid crystal mixture were low.
Trimethylamine-Borane as Useful Reagent in the N-Acylation or N-Alkylation of Amines by Carboxylic Acids
Trapani, Giuseppe,Reho, Antonia,Latrofa, Andrea
, p. 1013 - 1014 (2007/10/02)
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