Download e-book for iPad: Advances in Friedel-Crafts Acylation Reactions.. Catalytic by Satori G., Maggi R.

By Satori G., Maggi R.

ISBN-10: 1420067923

ISBN-13: 9781420067927

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By Satori G., Maggi R.

ISBN-10: 1420067923

ISBN-13: 9781420067927

Show description

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Quite similar results are achieved with iron trichloride, tin tetrachloride, and zinc chloride, while in the case of antimony pentachloride and titanium tetrachloride, compound 5 is the major product. Mechanistic studies show that the reaction involves the isomerization of 5 to 7 and 6. 1 Activity and selectivity of different Lewis acids in the benzoylation of 2-MN with BC O OMe 5 + OMe COCl O PhNO2, 3 h + OMe 4 6 + OMe O 7 Product distribution (%) Catalyst T (°C) 4 Conv. 7 Interestingly, this compound can be transformed in situ into bismuth trichloride by reaction with acyl chlorides: BiOCl + 2RCOCl → BiCl3 + (RCO)2O.

4 Synthesis of (E)‑2‑benzylideneindan‑1‑ones promoted by TFAA R R COOH 13 TFAA, CH2Cl2, reflux, 2 h O 14 R Yield (%) Ph 4‑MeC6H4 4‑EtC6H4 4‑PriC6H4 2‑MeC6H4 4‑BrC6H4 63 61 59 56 67 50 yields (78%–95%) with BAN or BC in the presence of bismuth(III) triflate (10% mol) without solvent. 15 for chlorobenzene). 24 It is assumed that the active cationic catalyst of titanium(IV) monochlorotriflate activates the carboxylic anhydride and generates a catalytic amount of mixed triflic– carboxylic anhydride along with titanium carboxylate.

2003. An alternative route to syntheses of aryl keto acids in a chloroaluminate ionic liquid. J. Chem. Res. (S) 650–651. 7. Surette, J. K. , and Singer, R. D. 1996. 1‑Ethyl‑3‑methylimidazolium hologenoaluminate melts as reaction media for the Friedel–Crafts acylation of ferrocene. Chem. Commun. 2753–2754. 8. , and Vol’pin, M. 1993. Direct alkylacylation of arenes and cycloalkanes in the presence of aprotic superacids. J. Chem. , Chem. Commun. 257–258. 9. Galli, C. 1979. Acylation of arenes and heteroarenes with in situ generated acyl trifluoroacetates.

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Advances in Friedel-Crafts Acylation Reactions.. Catalytic and Green Processes by Satori G., Maggi R.


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