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A New Catalytic System for the Hydroformylation of Styrene Using Alkene Complexes of Platinum(0)

✍ Scribed by Carlo Botteghi; Stefano Paganelli; Ugo Matteoli; Alberto Scrivanti; Rocco Ciorciaro; Luigi M. Venanzi

Publisher
John Wiley and Sons
Year
1990
Tongue
German
Weight
196 KB
Volume
73
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

The platinum(0) complexes [Pt(C~2~H~4~)(PP)] (PP = 1,2‐bis[(diphenylphosphino)methyl]benzene (2) and (+)‐DIOP = (+)‐1,4‐bis(diphenylphosphino)‐1,4‐dideoxy‐2,3‐O‐isopropyliden‐D‐threitol), when promoted by CH~3~SO~3~H, become active catalysts for styrene hydroformylation with total yields of aldehydes ranging from 44 to 67% und selectivities towards 3‐phenylpropanal ranging from 80 to 88%. Smaller amounts of the corresponding alcohols (3–18%) are also obtained with a selectivity towards 3‐phenylpropanol of 94–96%. When DIOP complexes were used, no stereoselectivity for asymmetric hydroformylation was observed.

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Rhodium(I), Palladium(II), and Platinum(II) Complexes Containing New Mixed Phosphane−Phosphite Ligands − Effect of the Catalytic System Stability on the Enantioselective Hydroformylation of Styrene
✍ Carmela G. Arena; Felice Faraone; Claudia Graiff; Antonio Tiripicchio 📂 Article 📅 2002 🏛 John Wiley and Sons 🌐 English ⚖ 297 KB 👁 2 views

The new mixed phosphane-phosphite ligands 1 and 2, derived from 3,3Ј-di-tert-butyl-2,2Ј-dihydroxy-5,5Ј-dimethoxybiphenyl and (S)-binaphthol, respectively, reacted with [Rh(COD)(THF) 2 ]CF 3 SO 3 to give the compounds [Rh(COD)(1)]CF 3 SO 3 and [Rh(COD)(2)]CF 3 SO 3 in which the ligands 1 and (S)-2 ar