1-Piperazinecarboxaldehyde → 1-(4,4-Diphenyl-2-cyclopentenyl)-4-formylpiperazine

HRID 1657290Notes

Reaction equation

[C:1]1([C:7]2([C:13]3[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=3)[CH:11](O)[CH:10]=[CH:9][CH2:8]2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[CH:19]([N:21]1[CH2:26][CH2:25][NH:24][CH2:23][CH2:22]1)=[O:20]>>[C:13]1([C:7]2([C:1]3[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=3)[CH2:8][CH:9]([N:24]3[CH2:25][CH2:26][N:21]([CH:19]=[O:20])[CH2:22][CH2:23]3)[CH:10]=[CH:11]2)[CH:14]=[CH:15][CH:16]=[CH:17][CH:18]=1

Participants

Reactant 2

HCID 821911-Piperazinecarboxaldehyde

HCID 100371165,5-Diphenyl-2-cyclopenten-1-ol

Product 1

HCID 99740361-(4,4-Diphenyl-2-cyclopentenyl)-4-formylpiperazine

Procedure

1-(4,4-Diphenyl-2-cyclopentenyl)piperazine dihydrochloride was obtained by reacting 5,5-diphenyl-2-cyclopenten-1-ol and 1-formylpiperazine according to a similar manner to that of Example 11 to give 1-(4,4-diphenyl-2-cyclopentenyl)-4-formylpiperazine, then eliminating formyl group thereof in a conventional manner.

Sources & evidence

ORD record: ord-d3eb7fe0aced40ca93bc2fed06562842
Source dataset: uspto-grants-1993_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05256824

Reaction notes

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