OXIDATION OF BENZOINS TO BENZILS
1663
16. Heravi, M. M.; Kiakajoori, R.; Hayder, K. T. Ammonium chlorochromate adsorbed on
montmorillonite K-10: Selective oxidation of alcohols under solvent-free conditions. J.
Chem. Res., Synop. 1998, 656–657.
17. Heravi, M. M.; Kiakajoori, R.; Mojahedi, M. M. Oxidation of alcohols by silica gel–
supported ammonium chlorochromate in solventless system. Indian J. Chem. 2001, 40B,
219–330.
18. Li, J.-T.; Liu, X.-R.; Wang, W.-F. An efficient oxidation of benzoins to benzils by ACC=
silica gel under ultrasound irradiation. Ultrasonics Sonochem. 2009, 16, 331–333.
19. Varma, R. S.; Saini, R. K. Wet alumina–supported chromium(VI) oxide: Selective
oxidation of alcohols in solventless system. Tetrahedron Lett. 1998, 39, 1481–1482.
20. Lou, J. D.; Li, L.; Vatanian, N.; Lu, X. L.; Yu, X. Selective oxidation of a-hydroxy
ketones to a-diketones with chromium trioxide supported on kieselguhr reagent. Synth.
React. Inorg. Met.-Org. Chem. 2008, 38(4), 373–375.
21. Lou, J. D.; Zhang, C.; Wang, G. Q. Oxidation of benzoins to benzils with chromium
trioxide supported on kieselguhr under viscous conditions. Synth. React. Inorg. Met.-
Org. Chem. 2009, 39(1), 6–8.
22. Lou, J. D.; Vatanian, N.; Zhang, C.; Wang, G. Q. Oxidation of benzoins with chromium
trioxide in dimethyl sulfoxide. Synth. React. Inorg. Met.-Org. Chem. 2009, 39(3), 121–123.
23. Zhang, G.-S.; Shi, Q.-Z.; Cai, K. Trimethylammonium chlorochromate adsorbed on
alumina as oxidant for alcohols and benzoins. Youji Huaxue 1998, 18, 263–267.
24. Ali, M. H.; Wiggin, C. J. Silica gel–supported Jones reagent (SJR): A simple, versatile, and
efficient reagent for oxidation of alcohols in nonaqueous media. Synth. Commun. 2001, 31,
3383–3393.
25. Mohammadpoor-Baltork, I.; Sadeghi, M. M.; Adibi, A.-H. Efficient, solvent-free
oxidation of organic compounds with potassium dichromate in the presence of Lewis
acids. Molecules 2001, 6, 900–908.
26. Degirmenbasi, N.; Ozgun, B. Quinoxalinium bromochromate—A new and efficient
reagent for oxidation of alcohols and bromination of aromatic compounds. G. U. J.
Sci. 2006, 19, 9–13.
27. Cainelli, G.; Cardillo, G. Chromium Oxidation in Organic Chemistry; Springer: Berlin,
1984.
28. Aydini, F.; Turunc, E. The use of pyridinium fluorochromate (PFC) supported on TriSyl
silica gel for oxidation reactions. J. Serb. Chem. Soc. 2007, 72, 129–132.
29. Sahu, A.; Rawal, M. K.; Sharma, V. K.; Parashar, B. Microwave-assisted oxidation of
benzoin on alumina using chromium-based oxidants. Internat. J. ChemTech Res. 2009,
1, 1087–1089.
30. Lou, J. D.; Xu, Z. N. Selective oxidation of primary alcohols with chromium trioxide
under solvent-free conditions. Tetrahedron Lett. 2002, 43, 6095–6097.
31. Lou, J. D.; Lu, X. L.; Marrogi, A. J.; Li, F.; Gao, C. L.; Yu, X. A first example for a
reaction under viscous conditions: Oxidation of solid benzoins with manganese dioxide.
Monatsh. Chem. 2008, 139, 609–611.
32. Khandekar, A. C.; Paul, A. M.; Khadilkar, B. M. Silica-supported manganese dioxide: An
efficient reagent for oxidation of benzoins. Synth. Commun. 2002, 32(19), 2931–2936.