Process for preparation of .alpha.-aromatic group...

Details Process for preparation of .alpha.-aromatic group... Process for preparation of .alpha.-aromatic group...

C - Chemistry, Metallurgy

07

C

260/321, 260/472

C07C 57/30 (2006.01) C07C 43/307 (2006.01) C07C 43/315 (2006.01) C07C 45/46 (2006.01) C07C 45/63 (2006.01) C07C 49/80 (2006.01) C07C 51/00 (2006.01) C07C 59/64 (2006.01) C07C 69/612 (2006.01) C07D 209/44 (2006.01) C07D 209/46 (2006.01) C07D 303/48 (2006.01) C07D 317/20 (2006.01) C07D 317/24 (2006.01) C07D 333/22 (2006.01) C07D 333/24 (2006.01)

Patent

CA 1186318

ABSTRACT OF THE DISCLOSURE The invention is a process for preparing an alpha-aromatic group substituted alkanoic acid or its ester of the general formula Image (I) wherein Ar represents an aromatic group and R1 represents a hydrogen atom or a saturated aliphatic group, or Ar and R1 may form a condensed ring together with the carbom atom to which they are bonded; and R2 represents a hydrogen atom, an alkyl group, or a hydroxyalkyl group. In the process an alpha- sulfonyloxyketone acetal of the general formula Image (II) wherein R3 and R4, independently from each other, represent an alkyl group, or taken together, represent an alkylene group; R5 represents a substituted or unsubstituted alkyl group or an aromatic group; and Ar and R1 are as defined above, is hydrolyzed, or treated with an agent having affinity for oxygen.

385670

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