Process for expoxidizing prochiral olefins and a catalyst therefor and intermediates for making the catalyst
US6211107A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 1998 |
| Grant date | Apr 3, 2001 |
| Priority date | — |
| Expiry date | Aug 27, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F13/005
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention relates to the catalyst (III) and intermediates for its preparation in which M is a transition metal ion; A is a counter-ion if required; B, B', and E and E' are independently selected from the group consisting of hydrogen aryl, C.sub.1-6 alkyl, silyl or aryl-C.sub.1-6 alkyl in which any aryl or alkyl moiety is optionally substituted or B' and B or E' and E together form a C.sub.2-6 polymethylene link; with the proviso that only one of the carbons marked with an asterisk if a chiral center; R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.9 and R.sub.10 are independently hydrogen, alkyl or alkoxy ##STR1##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.