54926-28-2Relevant academic research and scientific papers
Synthesis of dibutyl-trimethylsilanylmethyl-amine and its application towards SO2absorption with phase change behaviors
Hao, Bo,Zhao, Wenbo,Feng, Dong,Xu, Shengchao,Chen, Yuan
, p. 21228 - 21237 (2020)
The enforcement of environmental law worldwide has attracted considerable attention in recent years towards capturing sulfur dioxide (SO2). The phase change absorption has turned out to be an effective way due to its industrially scalable characteristics. Herein, an aminosilane absorbent, namely dibutyl-trimethylsilanylmethyl-amine (DTSMA), was facilely synthesized by a substitution reaction of chloromethyltrimethylsilane and di-n-butylamine. The phase-change absorption performance of SO2 was systematically studied by using dimethyl silicone oil (DSO) as the solvent. The viscosity of pure DTSMA was only 1.29 mPa s, which is much lower than those of absorbents such as ionic liquids and deep eutectic solvents reported elsewhere, and the absorption product is found to be a charge transfer complex DTSMA SO2. The absorption capacity of DTSMA can reach 1.90 and 0.57 mol SO2 per mol DTSMA under 1 and 0.02 atm at 30 °C, respectively. In particular, the DTSMA/DSO solution can be not only almost regenerated within just 60 minutes at 100 °C, but also exhibited selective absorption towards SO2. All the results indicated that the synthesized DTSMA absorbent has enormous potential for application in capturing SO2 with benign circular desorption performance. This journal is
1,2-Amino Alcohols via Cr/Photoredox Dual-Catalyzed Addition of α-Amino Carbanion Equivalents to Carbonyls
Schwarz, J. Luca,Kleinmans, Roman,Paulisch, Tiffany O.,Glorius, Frank
supporting information, p. 2168 - 2174 (2020/03/03)
Herein, we report the synthesis of protected 1,2-amino alcohols starting from carbonyl compounds and α-silyl amines. The reaction is enabled by a Cr/photoredox dual catalytic system that allows the in situ generation of α-amino carbanion equivalents which act as nucleophiles. The unique nature of this reaction was demonstrated through the aminoalkylation of ketones and an acyl silane, classes of electrophiles that were previously unreactive toward addition of alkyl-Cr reagents. Overall, this reaction broadens the scope of Cr-mediated carbonyl alkylations and discloses an underexplored retrosynthetic strategy for the synthesis of 1,2-amino alcohols.
Selective 1,2-Aryl-Aminoalkylation of Alkenes Enabled by Metallaphotoredox Catalysis
Chen, Zimin,Hu, Yuanyuan,Li, Weirong,Liao, Zixuan,Xi, Xiaoxiang,Yuan, Weiming,Zheng, Songlin
supporting information, p. 17910 - 17916 (2020/08/21)
A highly chemo- and regioselective intermolecular 1,2-aryl-aminoalkylation of alkenes by photoredox/nickel dual catalysis is described here. This three-component conjunctive cross-coupling is highlighted by its first application of primary alkyl radicals, which were not compatible in previous reports. The readily prepared α-silyl amines could be transferred to α-amino radicals by photo-induced single electron transfer step. The radical addition/cross-coupling cascade reaction proceeds under mild, base-free and redox-neutral conditions with good functional group tolerance, and importantly, provides an efficient and concise method for the synthesis of structurally valuable α-aryl substituted γ-amino acid derivatives motifs.
