O-pyrones and a process for their preparation and the use...

Details O-pyrones and a process for their preparation and the use... O-pyrones and a process for their preparation and the use...

C - Chemistry, Metallurgy

07

D

260/356.6

C07D 309/38 (2006.01)

Patent

CA 1291142

.alpha.-Pyrones and a process for their preparation and the use thereof Abstract of the Disclosure Alkoxymethyleneaconitic acid triesters of formula I Image (I), wherein R1, R2, R3 and R4 are each independently unsubstituted or substituted aliphatic hydrocarbon radicals, can be obtained by reacting aconitic acid triesters with formates in the presence of TiCl4, a tertiary amine and a complexing solvent. Enol ethers of formula I can be cyclised in the presence of strong anhydrous acids, in a manner which is known per se, to 2-oxo-2H-pyran- 4,5-dicarboxylic acid diesters of formula V Image (V) , The pyrones of formula V are intermediates for the synthesis of organiccompounds and can be used for example as diene components in Diels- Alder reactions.

571476

Affiliated with

Also associated with

Rating

O-pyrones and a process for their preparation and the use... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with O-pyrones and a process for their preparation and the use..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and O-pyrones and a process for their preparation and the use... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1293543