- Chloroacetylation of arenes using chloroacetyl chloride in the presence of FeCl3 modified montmorillonite K10
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Chloroacetylation reaction of arenes using chloroacetyl chloride has been studied in the presence of Fe-modified montmorillonite K10 catalysts in a liquid phase. The catalysts have been prepared by treating montmorillonite K10 with aqueous solution of FeCl3. Good yields and selectivity are observed for the acylated product.
- Paranjape, Tejashri B.,Gokhale, Geetanjali D.,Samant, Shriniwas D.
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p. 310 - 314
(2008/09/20)
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- METHOD FOR PRODUCING 2,5-DIMETHYLPHENYL ACETIC ACID
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The invention relates to a method for producing 2,5-dimethylphenyl acetic acid by reacting p-xylol with chloroacetyl chloride to form 2-chloro-1-(2,5-dimethylphenyl) ethanone, which reacts with the compound of formula (II) to form the compound of formula (III). The latter is then rearranged into a mixture of compounds (IV) and (V), which is then saponified to form 2,5-dimethylphenyl acetic acid. (II) (III) (IV) (V).
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Page/Page column 9; 12; 13; 14
(2008/06/13)
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- Antimony(V) chloride-benzyltriethylammonium chloride complex as an efficient catalyst for friedel-crafts acylation reactions
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A novel catalytic system, the complex of antimony(V) chloride (SbCl 5) and benzyltriethylammonium chloride (TEBA), C6H 5CH2NEt3(SbCl5)2Cl complex, is described for Friedel-Crafts acylation reactions of aromatics with acyl and sulfonyl chlorides. The catalyst has a number of useful characteristics, such as ready access, minimal toxicity, reusability, insensitivity to atmosphere and moisture, rapid acylation with high yield, and ease of operation.
- Huang, An-Ping,Liu, Xue-Yuan,Li, Lian-Hua,Wu, Xiao-Li,Liu, Wei-Min,Liang, Yong-Min
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p. 599 - 602
(2007/10/03)
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- Photoenolization with α-Chloro Substituents
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Irradiation of a methanol solution of 2,5-dimethyl-α-chloropropiophenone (1a) produces 2,6-dimethyl-1-indanone (2a), 2-(methoxymethyl)-5-methylpropiophenone (3a), 2,5-dimethylpropiophenone (4a), and methyl 2-(2,5-dimethylphenyl)propionate (5a).It is proposed that the first two products arise from hydrogen abstraction followed by chlorine loss, the latter two from initial loss of chlorine.Making the chlorine-bearing carbon primary suppresses the formation of the latter two products, while maintaining the carbonyl nearly planar with the ring suppresses all product formation.Other examples are presented.
- Bergmark, William R.,Barnes, Curtis,Clark, Jeffrey,Paparian, Seth,Marynowski, Susan
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p. 5612 - 5615
(2007/10/02)
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