40868-61-9Relevant academic research and scientific papers
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.).
Rubine disazo acid dyes for polyamides
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, (2008/06/13)
Dyes of the formula STR1 wherein B and D are each independently 1,4-phenylene or 1,4-naphthylene; M is hydrogen, lithium, sodium, potassium or ammonium; A1 is hydrogen, C1-4 alkoxy, C1-4 alkyl, trifluoromethyl, nitro, chloro, bromo, cyano, or hydroxy; B1 and B2 are each hydrogen, C1-3 alkoxy, C1-3 alkyl, chloro or bromo; D1 is hydrogen, C1-4 alkoxy, C1-4 alkyl, or chloro; D2 is hydrogen, C1-4 alkoxy, C1-4 alkyl, chloro, bromo, fluoro, or acylamino, acyl being C1-5 alkanoyl, C1-5 alkylsulfonyl, benzoyl or benzenesulfonyl, each acyl unsubstituted or substituted with 1 to 3 of C1-2 alkyl, C1-2 alkoxy, chloro, bromo, cyano, or hydroxy; and R1 and R2 are each C1-6 alkyl, C1-6 chloro or bromoalkyl, C2-6 hydroxy- or dihydroxyalkyl, C2-6 alkoxyalkyl, C1-6 cyanoalkyl, or phenyl-C1-2 alkyl (phenyl unsubstituted or substituted with 1 to 3 of C1-2 alkyl, C1-2 alkoxy, chloro, bromo, cyano or hydroxy) are useful in dyeing natural and synthetic polyamide fibers in deep and level shades of red to blue.
