Preparation of 2-substituted but-2-ene-1,4-dial-4-acetals and no

Details Preparation of 2-substituted but-2-ene-1,4-dial-4-acetals and no Preparation of 2-substituted but-2-ene-1,4-dial-4-acetals and no

1994-09-29

1996-11-19

Chan, Nicky

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D31906

Patent

active

055764495

ABSTRACT:
The preparation of 2-substituted but-2-ene-1,4-dial-4-acetals of the formula I ##STR1## in which the substituents R.sup.1 to R.sup.4 stand for hydrogen or C.sub.1 -C.sub.6 aliphatic radicals, and R.sup.2 and R.sup.3 or R.sup.1 and R.sup.2 are in each case common members of an aliphatic 4-membered to 7-membered ring, which can contain a hetero atom, and R.sup.5 denotes an alkyl, alkenyl, or alkynyl radical having from 1 to 12 C atoms, which can be substituted by cycloaliphatic, aromatic or heterocyclic radicals or by hydroxy, ether, thioether, acyl, alkylamino, carboxy, or carbalkoxy groups, an optionally substituted aryl radical or an alkoxy, alkylthio, or acyloxy group, wherein

REFERENCES:
patent: 4835320 (1989-05-01), Blanc et al.
patent: 5162552 (1992-11-01), Merger et al.

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