Conversion of 1,3-dioxanes to 4-oxaaldehydes

Details Conversion of 1,3-dioxanes to 4-oxaaldehydes Conversion of 1,3-dioxanes to 4-oxaaldehydes

1988-04-29

1990-07-03

Brust, Joseph Paul

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

568443, 568450, 546268, 546283, 546284, 549 59, 549 60, 549 78, 549473, 549502, C07D21348, C07D30746, C07D33322

Patent

active

049392808

ABSTRACT:
4-Oxaaldehydes of the formula ##STR1## are prepared by catalytic isomerization of 1,3-dioxanes by a process in which a 1,3-dioxane of the formula ##STR2## where R.sup.1, R.sup.2, R.sup.4 and R.sup.5 are identical or different and are each hydrogen, a straight-chain or branched alkyl, alkenyl or alkynyl radical of not more than 18 carbon atoms, a cycloalkyl or cycloalkenyl radical of 5 to 8 carbon atoms, an aryl, alkylaryl, aralkyl or alkenylaryl radical of 5 to 16 carbon atoms or a heterocyclic radical, and furthermore R.sup.1 and R.sup.2 and/or R.sup.4 and R.sup.5 together with the carbon atom to which they are bonded may form a cycloalkane, a cycloalkene or a heterocyclic structure, and the stated radicals may furthermore carry substituents which are inert under the reaction conditions, and R.sup.3 is hydrogen or straight-chain or branched alkyl, is isomerized using a phosphate as a catalyst.

REFERENCES:
patent: 3676500 (1972-07-01), Mantell
patent: 3965208 (1976-06-01), Butter et al.
patent: 4691063 (1987-09-01), Engel et al.
patent: 4709097 (1987-11-01), Hoelderich et al.
J. Am. Chem. Soc. 892 (1960) 6419.
J. Am. Chem. Soc. 84 (1962) 3307.
European Search Report.

Affiliated with

Also associated with

Rating

Conversion of 1,3-dioxanes to 4-oxaaldehydes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Conversion of 1,3-dioxanes to 4-oxaaldehydes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Conversion of 1,3-dioxanes to 4-oxaaldehydes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1892104