Pyridinium chloride → HCID 69963181, compound

HRID 429420Notes

Reaction equation

C[O:2][C:3]1[CH:12]=[C:11]2[C:6]([C@H:7]([C:21]3[CH:26]=[CH:25][C:24]([O:27][CH2:28][CH2:29][N:30]4[CH2:34][CH2:33][CH2:32][CH2:31]4)=[CH:23][CH:22]=3)[C@H:8]([C:13]3[CH:18]=[CH:17][CH:16]=[C:15]([O:19]C)[CH:14]=3)[CH2:9][O:10]2)=[CH:5][CH:4]=1.Cl.N1C=CC=CC=1>>[OH:2][C:3]1[CH:12]=[C:11]2[C:6]([C@H:7]([C:21]3[CH:26]=[CH:25][C:24]([O:27][CH2:28][CH2:29][N:30]4[CH2:31][CH2:32][CH2:33][CH2:34]4)=[CH:23][CH:22]=3)[C@H:8]([C:13]3[CH:18]=[CH:17][CH:16]=[C:15]([OH:19])[CH:14]=3)[CH2:9][O:10]2)=[CH:5][CH:4]=1

Participants

Reactant 2

HCID 10176127Pyridinium chloride

HCID 70292445HCID 70292445, compound

Product 1

HCID 69963181HCID 69963181, compound

Procedure

Thus (±)-cis-7-methoxy-3-(3-methoxyphenyl)-4-(4-(2-pyrrolidinoethoxy)phenyl)-chromane was de-methylated by heating with pyridine hydrochloride to give the racemic mixture, (±)-cis-7-hydroxy-3-(3-hydroxyphenyl)-4-(4-(2-pyrrolidinoethoxy)-phenyl)chromane. The title compound was then separated from this racemic mixture by means of preparative chiral HPLC {Chiradex 5 μm, 250×25 mm column; flow=20 ml/min; 40% methanol, 60% buffer (0.2% aqueous triethylammonium acetate, pH 3.5) eluent, 220 nm UV detection}. The title compound was the more slowly eluted enantiomer, Rt=46-64 min.

Sources & evidence

ORD record: ord-1eeeba0f269446f08678987f87617300
Source dataset: uspto-grants-2001_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06316494B1

Reaction notes

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