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The influence of the central metal atom and acid residue in a molecule of organometallic compound Ph 3 MX 2 (M = Bi, Sb; X = Cl, Br, OAc, O 2 CEt) on the direction and yield of dephenylation products in a methyl acrylate-methanol system in the presence of Cu(OAc) 2 and Na 2 PdCl 2 (OAc) 2 was studied at 50 °C in acetonitrile. The main product of dephenylation of the antimony compounds is methyl cinnamate (yield 0.31-1.59 moles per mole of the starting Ph 3 SbX 2 ), while anisole (0.55-0.97 mol) and halobenzene (0.67-1.04 mol) are those for compounds Ph 3 Bi(O 2 CR) 2 and Ph 3 BiHal 2 , respectively.

Carboxylic acid estersCarboxylic acid esters Q 0530 Use of Triarylstibines in C-Arylation Reactions. -Triarylstilbines, in the presence of peroxide and catalytic amounts of Pd(II), are found to be useful for C-arylation of methyl acrylate under mild conditions. -(MOISEEV, D. V.; MORUGOVA, V. A.; GUSHCHIN*, A. V.; DODONOV, V. A.; Tetrahedron Lett. 44 (2003) 15, 3155-3157; Dep. Org. Chem., Nizhnii Novgorod State Univ., Nizhnii Novgorod 603950, Russia; Eng.) -Mais 28-098

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