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The oxidative cleavage of carbontin bond catalyzed by heteropolyacids of molybdenum

✍ Scribed by M.H Alizadeh; H Razavi; F.F Bamoharram; K Daneshvar

Publisher: Elsevier Science
Year: 2003
Tongue: English
Weight: 164 KB
Volume: 206
Category: Article
ISSN: 1381-1169
DOI: 10.1016/s1381-1169(03)00251-6

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✦ Synopsis

Heteropolymolybdoacids, H 3 [PMo 12 O 40 ] and H 6 [P 2 Mo 18 O 62 ], catalyze the oxidative cleavage of C-Sn bond in the organotin derivatives of dibenzyldichlorotin (1) and tribenzylchlorotin (2) in the presence of dioxygen. Benzaldehyde is the major reaction product, accompanied by smaller amounts of benzyl alcohol, benzyl chloride and dibenzyl. The results show that H 6 [P 2 Mo 18 O 62 ] as catalyst and ethanol (as solvent) produce the highest yield of benzaldehyde at 65 • C. Also, 1 produces a higher yield than 2. The effects of catalyst type, temperature and solvent on the reaction time have been examined. In every case, H 6 [P 2 Mo 18 O 62 ] causes the C-Sn bond cleavage to be achieved in a shorter time than does H 3 [PMo 12 O 40 ].

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