40920-42-1Relevant academic research and scientific papers
Preparation method of α,β- or β,β-dihaloenones from diazodicarbonyls
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Paragraph 0031-0033; 0109-0110, (2017/08/30)
The present invention relates to a method for preparing andalpha;,andbeta;- or andbeta;,andbeta;-dihaloenone compounds from diazodicarbonyl compounds. According to the present invention, a diazo compound reacts with an oxalyl halide in the presence of a ruthenium catalyst so andalpha;,andbeta;- and andbeta;,andbeta;-dihaloenones can be synthesized through one-step reaction in an easy, simple and environmental manner. The synthesized andalpha;,andbeta;- and andbeta;,andbeta;-dihaloenones can be widely used for synthesis of intermediates of various drugs, natural materials, agricultural pesticides, dyes, etc. due to various biological activities.COPYRIGHT KIPO 2017
AuFeAg hybrid nanoparticles as an efficient recyclable catalyst for the synthesis of α,β- and β,β-dichloroenones
Mishra, Kanchan,Basavegowda, Nagaraj,Lee, Yong Rok
, p. 180 - 187 (2015/09/29)
A facile and green pioneer approach for the synthesis of stable trimetallic AuFeAg hybrid nanoparticles is described. This synthetic method is green-chemistry compatible and totally free of additives. The particle shape and size, surface chemistry, crystallinity, elemental composition, thermal and magnetic properties were investigated. The catalytic performance of the synthesized nanoparticles is also described. The hybrid nanocatalyst exhibited strong catalytic activity for the synthesis of α,β- and β,β-dichloroenones, which are important synthetic intermediates in the preparation of natural products. The reason behind the catalytic performance of nano sized hybrid particles was attributed to their high specific surface area. In addition, the nanocatalyst was easy to separate from the reaction mixture using an external magnet and could be reused for five consecutive reactions without any significant loss of activity. Using the present method, the trimetallic hybrid combination can be designed for similar types of catalytic reactions.
Ruthenium(II)-catalyzed protocol for preparation of diverse α,β- and β,β-Dihaloenones from diazodicarbonyls
Magar, Krishna Bahadur Somai,Lee, Yong Rok
, p. 3422 - 3432 (2015/02/02)
Efficient one-step syntheses of α,β- and β,β-dihaloenones were achieved by ruthenium(II)- catalyzed reactions between cyclic or acyclic diazodicarbonyl compounds and oxalyl chloride or oxalyl bromide in moderate to good yields. This methodology offers sev
β-Acylvinyl-dicarbonyl-η5-cyclopentadienyl-iron Complexes
Gompper, Rudolf,Kottmair, Eduard
, p. 833 - 847 (2007/10/02)
Reactions of β-chlorovinylcarbonyl compounds 10, 14, 16, 18, 20, 22, with sodium dicarbonyl-η5-cyclopentadienyl-ferrate (NaFp) furnish β-acylvinyl-dicarbonyl-η5-cyclopentadienyl-iron complexes 15, 17, 19, 21, 23 and binuclear iron co
