Stereoselective preparation of hexahydro dibenzopyranones...

Details Stereoselective preparation of hexahydro dibenzopyranones... Stereoselective preparation of hexahydro dibenzopyranones...

C - Chemistry, Metallurgy

07

D

260/359.9

C07D 311/80 (2006.01)

Patent

CA 1101875

Abstract of the Disclosure This invention provides a process comprising the reaction of an optically active 4-(4-substituted-2,6- dihydroxyphenyl)-6,6-dimethyl-2-norpinanone with an acid to provide an optical isomer of a 1-hydroxy-3-substituted-6,6- dimethyl-6,6a,7,8,10,10a-hexahydro-9H-dibenzo[b,d]pyran-9- one, wherein the hydrogen atoms at the 6a and 10a positions may be in either the Cis or trans conformation. The optically active norpinanones are prepared by reaction of a 5-sub- stituted resorcinol with an optically active 6,6-dimethyl- 2,4-diacetoxy-2-norpinene or an optically active 6,6-di- methyl-2,2-diacetoxy-9-norpinene, which compounds are derived from known optically active .beta.-pinenes.

281784

Affiliated with

Also associated with

Rating

Stereoselective preparation of hexahydro dibenzopyranones... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Stereoselective preparation of hexahydro dibenzopyranones..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stereoselective preparation of hexahydro dibenzopyranones... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1110732