13148-19-1Relevant articles and documents
Ion-size recognition of Group 13 metals (Al3+, In3+) with modified β-diketones
Le, Quyen T. H.,Umetani, Shigeo,Matsui, Masakazu
, p. 3835 - 3840 (1997)
Ion-size recognition of Group 13 metals (Al3+ and In3+) with modified β-diketones, 3-phenylpentane-2,4-dione (α-phenylacetylacetone, HL2) and 1,2-diphenylbutane-1,3-dione (α-phenylbenzoylacetone, HL4), has been
A method of preparing intermediates handkerchief auspicious past cloth sodium
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Paragraph 0027; 0028, (2017/05/05)
The invention discloses a novel method for preparing a parecoxib sodium intermediate 5-methyl-3, 4-diphenyl isoxazole. The method comprises the following steps: performing rearrangement reaction on a compound in the formula I (referring to the Specification)under the action of a catalyst to prepare a compound in the formula II(referring to the Specification); and under the condition of a catalyst, reacting hydroxylammonium chloride with the compound in the formula II to prepare 5-methyl-3,4-diphenyl isoxazole. The method disclosed by the invention has the advantages of mild reaction condition, good simplicity and convenience for operation, low cost, environmental-friendliness and the like.
Tandem carbon-carbon bond insertion and intramolecular aldol reaction of benzyne with aroylacetones: Novel formation of 4,4′-disubstituted 1,1′-binaphthols
Okuma, Kentaro,Itoyama, Ryoichi,Sou, Ayumi,Nagahora, Noriyoshi,Shioj, Kosei
, p. 11145 - 11147 (2013/01/15)
An efficient route to 4-aryl-2-naphthols from arynes and aroylacetones was developed by carbon-carbon bond insertion followed by an intramolecular aldol reaction and dehydration. Benzyne derived from 2-(trimethylsilyl)phenyl triflate reacted with benzoyla
