PROCESS FOR THE PREPARATION OF ISOXAZOLINE DERIVATIVES
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Jul 24, 2014
app pub date -
Feb 3, 2011
filing date -
Feb 25, 2010
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
The present invention relates to processes for the preparation of compounds of formula IB wherein A1, A2, A3, A4, L, Y1, Y2, R1, R2, R3, R4 and R5 are as defined in the claims, comprising reacting a compound of formula (II) wherein Y1, Y2, L, A1, A2, R1, R2, R3, R4 and R5 are as defined for the compound of formula (I); with hydroxylamine in the presence of water, a base and a chiral phase transfer catalyst, which chiral phase transfer catalyst is a quinine derivative. The invention also relates to compounds of formula IB and enantiomerically enriched mixtures comprising compounds of formula IB.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully