Back to results
US 4,363,925 AGranted
Preparation of aromatic silanes
AssigneeBASF SE
InventorsRolf-Dieter Acker, Gerhard Hamprecht, Franz-Josef Mueller
Life of this patent
Estimating the term…
Abstract
Aromatic silanes are prepared by reacting an aromatic halogen compound with a disilane in the presence of a palladium complex and a phosphite or phosphine. The aromatic silanes obtainable by the process of the invention are valuable intermediates for the preparation of drugs, dyes and pesticides.
Claims9
A process for the preparation of aromatic silanes of the formula:
- ##STR33## where the individual radicals R.sup.1 and R.sup.2 can be identical or different and each is an aliphatic, cycloaliphatic, araliphatic or aromatic radical, and each radical R.sup.2 can also be hydrogen, halogen, nitro, cyano, --O--R.sup.3, ##STR34## where R.sup.3 is an aliphatic, cycloaliphatic, araliphatic or aromatic radical, wherein an aromatic halogen compound of the formula:
- ##STR35## where R.sup.2 has the above meaning and X is halogen, is reacted with a disilane of the formula:
- ##STR36## where R.sup.1 has the above meaning, in the presence of a palladium complex with a ketone and/or an anhydride, and in the presence of a phosphine or phosphite which is trisubstituted by aliphatic or aromatic radicals.
Dependencies are inferred from the claim text.