55648-31-2Relevant academic research and scientific papers
Improved and General Manganese-Catalyzed N-Methylation of Aromatic Amines Using Methanol
Neumann, Jacob,Elangovan, Saravanakumar,Spannenberg, Anke,Junge, Kathrin,Beller, Matthias
, p. 5410 - 5413 (2017)
A novel lutidine-based manganese PNP-pincer complex has been synthesized for the selective N-methylation of aromatic amines with methanol. Using borrowing hydrogen methodology, a selection of differently functionalized aniline derivatives is selectively methylated in good yields.
Novel method for preparing iomeprol
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Paragraph 0051; 0058, (2018/02/03)
The invention belongs to the technical field of non-ionic X-ray contrast agents, and discloses a novel method for preparing iomeprol. The preparation method comprises the steps of carrying out N-methylation reaction by employing a compound 5-aminoisophthalic acid as a raw material; carrying out esterification reaction; carrying out amidation reaction; carrying out iodination reaction; carrying out chloroacetylation reaction; and finally carrying out hydroxylation reaction to prepare the iomeprol. The preparation method is stable in quality, high in yield, low in cost, environmentally friendly, and easy for realization of industrial mass production.
Synthesis of well-defined hyperbranched polyamides by condensation polymerization of AB2 monomer through changed substituent effects
Ohta, Yoshihiro,Fujii, Shuichi,Yokoyama, Akihiro,Furuyama, Taniyuki,Uchiyama, Masanobu,Yokozawa, Tsutomu
supporting information; experimental part, p. 5942 - 5945 (2009/12/08)
Branching out: Condensation polymerization of AB2 monomer proceeds selectively from a core molecule owing to the change of substituent effects between the monomer and the polymer (see scheme). Hyperbranched polyamides are obtained with very low
