3446-89-7Relevant articles and documents
Copper(II)-Ethanolamine Triazine Complex on Chitosan-Functionalized Nanomaghemite for Catalytic Aerobic Oxidation of Benzylic Alcohols
Hasanpour, Benyamin,Jafarpour, Maasoumeh,Feizpour, Fahimeh,Rezaeifard, Abdolreza
, p. 45 - 55 (2021)
Abstract: In this study a novel, effective and recoverable Cu(II)-catalyst was synthesized by incorporating of Cu(OAc)2 within ethanolamine-triazine derivative (TAETA) attached to chitosan (Chs)-functionalized γ-Fe2O3 nanoparticles [MNP@Chs/TAETA-Cu(II)]. It was characterized by different techniques such as FT-IR, EDS, ICP, TEM, TGA and VSM. The as-prepared nanocomposite demonstrated high oxidation activity and desired selectivity in the aerobic oxidation of structurally diverse set of benzyl alcohols. Spectral results and leaching experiments revealed that this magnetically recoverable heterogeneous catalyst preserved its structure after it was reused several?times. This protocol offers some beneficial features such as the use of oxygen as an ideal oxidant, stability of nanocomplex, easily catalyst separation by using an external magnetic field and efficient recycling as well as the lack of by-products. Graphic Abstract: [Figure not available: see fulltext.]
Highly atom efficient synthesis of 2,2,4,5-tetrasubstituted 3(2H)-furanones having both hydroxyl and amino substituents
Antony, Jesna,Mathai, Sindhu,Natarajan, Rakesh,P. Musthafa, Sumi,Rappai, John P.,S. Devaky, Karakkattu
supporting information, (2022/02/25)
We have developed a highly atom efficient synthesis of tetrasubstituted 3(2H)-furanones from easily accessible starting materials such as C,N-diarylaldonitrones and dibenzoylacetylene. Control experiments revealed that reaction of aldonitrones having electron-withdrawing groups on the C-aryl substituent in polar aprotic solvents exhibited high product selectivity while reaction temperature has only a negligible effect on product yield and selectivity.
Preparation method of p-methylsulfonyl benzaldehyde
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Paragraph 0012; 0027; 0031; 0033; 0037; 0039; 0043; 0045..., (2021/07/24)
The invention relates to a preparation method of p-methylsulfonyl benzaldehyde, and solves the technical problems that the existing preparation method is unreasonable, high in raw material toxicity, complex in operation, high in cost, high in three-waste yield, low in yield and unsuitable for industrial product. The preparation method of p-methylsulfonyl benzaldehyde takes p-nitroformaldehyde as a raw material and sodium sulfide as a reducing agent, and the preparation method comprises the following steps: carrying out a reduction reaction under an alkaline condition to generate p-aminobenzaldehyde, dropwise adding sodium methyl mercaptide into the p-aminobenzaldehyde in the presence of hydrochloric acid and sodium nitrite, carrying out a diazo reaction and a substitution reaction to generate p-methylthiobenzaldehyde, and oxidizing the p-methylthiobenzaldehyde by using hydrogen peroxide under an acidic condition to obtain the p-methylsulfonyl benzaldehyde. The method can be widely applied to the technical field of veterinary drug and medicine raw material medicine synthesis.