Method of evaluating the catalytic activity of a rare earth...

Chemistry: analytical and immunological testing – Testing of catalyst

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C436S161000, C436S183000

Reexamination Certificate

active

10431225

ABSTRACT:
This invention provides a method of evaluating the catalytic activity of a rare earth alkoxide used as a starting material of a basic catalyst or an asymmetric synthesis catalyst. The rare earth alkoxide used as the subject of evaluation and 2,2′-dihydroxy-1, 1′-binaphthol are used as the starting material to prepare a rare earth complex catalyst which is then used to conduct the asymmetric epoxidation of an enone. The epoxy enone formed by this reaction, the unreacted enone, and the enantiomeric excess are measured, and from these results, the catalytic activity of the rare earth alkoxide is evaluated.

REFERENCES:
patent: 6201123 (2001-03-01), Daikai et al.
patent: 10-120668 (1998-05-01), None
Bougauchi, M. et al, Journal of the American Chemical Society 1997, 119, 2329-2330.
Daikai, K. et al, Tetrahedron Letters 1998, 39, 7321-7322.
Watanabe, S. et al, Tetrahedron Letters 1998, 39, 7353-7356.
Nemoto, T. et al, Journal of the American Chemical Society 2001, 123, 2725-2732.
Chen, R. et al, Tetrahedron Letters 2001, 42, 6919-6921.
Nemoto, T. et al, Journal of the American Chemical Society 2001, 123, 9474-9475.
Chen, R. et al, Tetrahedron 2001, 57, 9837-9842.
Sekine, A. et al, Tetrahedron 2002, 58, 75-82.
Sugihara, H. et al, Tetrahedron Letters 2002, 43, 2735-2739.
Daikai, K. et al, Kidorui 1998, 32, 298-299.
Inanaga, J., Kidorui 1999, 34, 190-191.
Chen, R.-F. et al, Chinese Journal of Chemistry 2001, 19, 1225-1231.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method of evaluating the catalytic activity of a rare earth... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of evaluating the catalytic activity of a rare earth..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of evaluating the catalytic activity of a rare earth... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3920005

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.