2,3-Dihydroxybutanedioic Acid → (R)-2-(3-(Diisopropylamino)-1-phenylpropyl)-4-methylphenol 2,3-dihydroxysuccinate

HRID 746661

Reaction equation

[CH3:1][C:2]1[CH:3]=[CH:4][C:5]([OH:24])=[C:6]([C@@H:8]([C:18]2[CH:19]=[CH:20][CH:21]=[CH:22][CH:23]=2)[CH2:9][CH2:10][N:11]([CH:15]([CH3:17])[CH3:16])[CH:12]([CH3:14])[CH3:13])[CH:7]=1.[C:25]([OH:34])(=[O:33])[CH:26]([CH:28]([C:30]([OH:32])=[O:31])[OH:29])[OH:27]>C(OC)(C)(C)C>[CH3:1][C:2]1[CH:3]=[CH:4][C:5]([OH:24])=[C:6]([C@@H:8]([C:18]2[CH:19]=[CH:20][CH:21]=[CH:22][CH:23]=2)[CH2:9][CH2:10][N:11]([CH:12]([CH3:14])[CH3:13])[CH:15]([CH3:16])[CH3:17])[CH:7]=1.[CH:26]([OH:27])([C:25]([OH:34])=[O:33])[CH:28]([OH:29])[C:30]([OH:32])=[O:31]

Participants

Conditions

Temperature: 40 °C

Procedure

Tolterodine free base (2.0 gm) is dissolved in methyl tert-butyl ether (25 ml), tartaric acid (1.2 gm) is added and the reaction mass is heated to 40° C. Then the contents are cooled to 25° C., maintained for 2 hours at 25° C. to 30° C. and filtered to give 2.1 gm of tolterodine tartrate form III.

Workup

temperatureThen the contents are cooled to 25° C.
temperaturemaintained for 2 hours at 25° C. to 30° C.
filtrationfiltered

Sources & evidence

ORD record: ord-f76e4e4203d24c6e953c60140ebe904d
Source dataset: uspto-grants-2008_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07393874B2

Linked notes

Loading…