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US 2020/0392115 A1Published application
Method for producing bispyrrolidine compounds
AssigneeBASF SE
InventorsRainer KLOPSCH, Hannes Ferdinand ZIPFEL, Alvaro GORDILLO BOLONIO
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Abstract
The present application relates to a method for preparing compounds of the formula I in which, in a first step, γ-butyrolactone is reacted with diamines of the formula II to form bisamides of the formula III, with the amide function of the bisamides of the formula III then undergoing partial or complete catalytic hydrogenation in step II) to form bispyrrolidine compounds of the formula I.
Claims12
-11. (canceled)
A method for preparing bispyrrolidine compounds of the formula (I)
- where
- Z is selected from the group consisting of NR, oxygen and carbon, wherein R is selected from the group consisting of hydrogen and linear or branched or cyclic C1-C20 substituted or unsubstituted alkyl groups,
- n is a whole natural number in the range from 0 to 9,
- m and o are independently a natural number in the range from 1 to 12,
- wherein in step I) γ-butyrolactone is reacted with diamines of the formula II
- where Z, n, m, and o are as defined above, to form bisamides of the formula III
- and then,
- in step II), the bisamides of the formula III are catalytically hydrogenated to form the bispyrrolidine compounds of the formula I.
5 more elements
Dependencies are inferred from the claim text.