Preparation of optically active phospholanes, their metal complexes and use in asymmetric synthesis

US6043396A · kind A · utility

Assignee

• BASF SE

Inventors

• Rainer Stürmer · Bad Dürkheim, DE
• Armin Börner · Rostock, DE
• Jens Holz · Kessin, DE
• Gudrun Voss · Rostock, DE

Key dates

• Filing date: Jun 8, 1998
• Grant date: Mar 28, 2000
• Expiry date: Jun 8, 2018

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2531/847
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Phospholanes and diphospholanes of the formula I ##STR1## where: R.sup.1 and R.sup.2 are, independently of one another, C.sub.1 -C.sub.6 -alkyl, aryl, alkylaryl, PA1 R.sup.1 is also hydrogen, PA1 A is either R.sup.1 or ##STR2## B is a linker having 1-5 carbon atoms between the two phosphorus atoms, and their use as catalyst in asymmetric synthesis.