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US 9,957,228 B2Granted
Process of production of 7,8-dihydro-C15-aldehyde
AssigneeDsm IP Assets B.V.
InventorsWerner Bonrath, Jan Schuetz, Thomas Netscher, Bettina Wuestenberg
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Abstract
The present invention relates to a new method to produce 7,8-dihydro-C15-aldehyde.
Claims14
A process for producing a compound of formula (I):
- wherein
- the process comprises the steps of:
- (1) conducting ethynylation of a compound of formula (III):
- and
- (2) performing a Meyer-Schuster rearrangement of the ethynylated compound of formula (III) to obtain the compound of formula (I), wherein
- step (1) is carried out by either a Grignard reaction or a catalytic reaction.
3 more elements
A process for producing a compound of formula (I):
- wherein
- the process comprises the steps of:
- (1) conducting an ethynylation of a compound of formula (III):
- and
- (2) performing a Meyer-Schuster rearrangement of the ethynylated compound of formula (III) to obtain the compound of formula (I), wherein
- the rearrangement of step (2) is carried out in at least one non-polar or polar aprotic organic solvent in the presence of at least one organic acid having a pK value in the range of about 4.0 to about 6.5.
3 more elements
Dependencies are inferred from the claim text.