Preparation of cephalosporins and intermediates employed...

Details Preparation of cephalosporins and intermediates employed... Preparation of cephalosporins and intermediates employed...

C - Chemistry, Metallurgy

07

D

260/298.2, 260/3

C07D 501/59 (2006.01) C07D 513/04 (2006.01) C07F 9/6561 (2006.01)

Patent

CA 1148938

ABSTRACT There is described a process for preparing an enamine of formula (LX), Image (LX) where R2 is a carboxylic acid protecting group and R3 is the residue of a carboxylic acid derived acyl group and where R5 and R6 are the same or different C1-4 alkyl or C7-10 aralkyl groups; or taken together with the adjacent nitrogen atom form a heterocyclic ring containing from 4 to 8 carbon atoms and optionally a further heteroatom selected from oxygen and nitrogen; by reacting a compound of formula (XII): Image (XII) with an amine of formula ???5R6, the reactant of formula (XII) being prepared by reaction of an appropriate ???? derivative with a phosphorus reagent. The amines of formula (IX) are useful in the preparation of 3-hydroxycephsiespories.

349470

Affiliated with

Also associated with

Rating

Preparation of cephalosporins and intermediates employed... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Preparation of cephalosporins and intermediates employed..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of cephalosporins and intermediates employed... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-226780