Hydrochloric Acid → HCID 53951463, compound

HRID 1386591Notes

Reaction equation

[C:1]([O:5][C:6]([N:8]1[C@H:17]([C:18]([OH:20])=[O:19])[CH2:16][C:15]2[C:10](=[CH:11][C:12]([OH:21])=[CH:13][CH:14]=2)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[CH2:22](Br)[CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][CH2:28][CH3:29].O.Cl>[OH-].[Na+].CS(C)=O.C(OCC)(=O)C>[C:1]([O:5][C:6]([N:8]1[C@H:17]([C:18]([OH:20])=[O:19])[CH2:16][C:15]2[C:10](=[CH:11][C:12]([O:21][CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][CH2:28][CH3:29])=[CH:13][CH:14]=2)[CH2:9]1)=[O:7])([CH3:4])([CH3:2])[CH3:3]

Participants

Conditions

Temperature: 80 °C

Procedure

A solution of (S)-2-Tert-butoxycarbonyl-1,2,3,4-tetrahydro-7-hydroxyisoquinoline-3-carboxylic acid (1 g) in a mixture of 10% NaOH aqueous solution (2.73 ml) and dimethylsulfoxide (11 ml) was stirred for half an hour at 80° C. Then, octyl bromide (0.589 ml) was added thereto, and stirred for 4 hours at 60° C. The reaction mixture was added to a mixture of water and ethyl acetate, and adjusted to pH 2.5 with conc. hydrochloric acid. The organic layer was taken, and dried over magnesium sulfate. The magnesium sulfate was filtered off, and the filtrate was evaporated under reduced pressure to give (S)-2-Tert-butoxycarbonyl-1,2,3,4-tetrahydro-7-octyloxyisoquinoline-3-carboxylic acid (1.30 g).

Workup

stirringstirred for 4 hours at 60° C
dry with materialdried over magnesium sulfate
filtrationThe magnesium sulfate was filtered off
customthe filtrate was evaporated under reduced pressure

Sources & evidence

ORD record: ord-c433044cca2345fa8c254390cfcce878
Source dataset: uspto-grants-2001_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06265536B1

Reaction notes

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