PREPARATION OF HETEROCYCLIC AROMATIC ALDEHYDES AND KETONES

    公开(公告)号:CA1331383C

    公开(公告)日:1994-08-09

    申请号:CA583240

    申请日:1988-11-16

    Applicant: BASF AG

    Abstract: ?9 A process for the preparation of heterocyclic aromatic (heteroaromatic) aldehydes and ketones of the general formula (I), (I) where Arhet is a five-membered or six-membered heteroaromatic radical having at least one nitrogen atom and R' is hydrogen or an alkyl radical of from 1 to 20 carbon atoms, by oxidation of the corresponding 1-hydroxyalkyl compounds (II) (II) wherein the oxidant is an inorganic or organic hypochlorite or hypobromite (III) in conjunction with an alpha,alpha,omega,omega-tetraalkylcycloalkane of the general formula (IV), (IV) where the radicals Alk are identical or different alkyls of from 1 to 4 carbon atoms, Q is one of the groups >N+=O X- ; >N-OH or >N-O (X- is an anion), n is either 0 or 1, and Y is oxygen, carbonyl, or >CR2R3; R2 and R3 are hydrogen, hydroxyl, or organic radicals in which the free valency is attached to carbon or oxygen and that may be linked to form a fivemembered or six-membered ring.

Patent Agency Ranking