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US 2023/0416178 A1Published application
Formation of p-alkylphenols based on intermolecular reaction of ethyne with 2-alkylfurans in the presence of gold(i) complexes
AssigneeDsm IP Assets B.V.
InventorsStephan ACKERMANN-MAURER, Werner BONRATH, Ulla LETINOIS, Thomas NETSCHER, Jan SCHUETZ
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Abstract
The present invention relates to the synthesis of p-alkylphenols and of 2,6-dimethyl-4-alkyl phenol from 2-alkylfurans with acetylene in the presence of a gold(I) complex as well as to 2,3,6 trimethylhydroquinone.
Claims17
A process for manufacturing p-alkylphenol of the formula (I)
- comprising the step of reacting a compound of the formula (II) with ethyne of the formula (III)
- in the presence of at least one Au(I) complex;
- and wherein R1 represents a C1-6-alkyl group.
Composition comprising
- a) at least one compound of the formula (II)
- wherein R1 represents a C1-6-alkyl group.
- b) ethyne of the formula (III);
- c) at least one Au(I) complex;
- and
- d) optionally at least one Ag(I) salt or Ag(I) complex.
3 more elements
Use of a Au(I) complex for the synthesis of compounds of the formula (I)
- wherein R1 represents a C1-6-alkyl group.
Dependencies are inferred from the claim text.