Sodium Hydroxide → HCID 22323765, compound

HRID 1059786Notes

Reaction equation

[CH3:1][C:2]1([CH3:31])[CH2:11][CH:10]=[C:9]([C:12]2[S:13][CH:14]=[C:15]([CH3:17])[N:16]=2)[C:8]2[CH:7]=[C:6]([C:18]#[C:19][C:20]3[CH:30]=[CH:29][C:23]([C:24]([O:26]CC)=[O:25])=[CH:22][CH:21]=3)[CH:5]=[CH:4][C:3]1=2.[OH-].[Na+]>CCO>[CH3:1][C:2]1([CH3:31])[CH2:11][CH:10]=[C:9]([C:12]2[S:13][CH:14]=[C:15]([CH3:17])[N:16]=2)[C:8]2[CH:7]=[C:6]([C:18]#[C:19][C:20]3[CH:21]=[CH:22][C:23]([C:24]([OH:26])=[O:25])=[CH:29][CH:30]=3)[CH:5]=[CH:4][C:3]1=2

Participants

Conditions

Temperature: 50 °C

Procedure

To a solution of ethyl 4-[5,6-dihydro-5,5-dimethyl-8-(4-methylthiazol-2-yl)-2-naphthalenyl]ethynylbenzoate (Compound 16) (145.0 mg, 0.34 mmol) and 4 ml of EtOH at room temperature was added aqueous NaOH (1 ml, 1 M, 1 mmol). The resulting solution was warmed to 50° C. for 1 hour and concentrated in vacuo. The residue was suspended in a solution of CH2Cl2 and ether (5:1) and acidified to pH 5 with 1M aqueous HCl. The layers were separated and the organic layer was washed with brine, dried (Na2SO4), filtered and the solvents removed under reduced pressure to give the title compound as a white solid. 1H NMR (d6-DMSO): δ 7.94 (2H, d, J=8.1 Hz), 7.87 (1H, d, J=1.6 Hz), 7.63 (2H, d, J=8.3 Hz), 7.50 (1H, dd, J=1.6, 8.1 Hz), 7.45 (1H, d, J=8.1 Hz), 7.27 (1H, s), 6.58 (1H, t, J=4.8 Hz), 2.43 (3H, s), 2.37 (2H, d, J=4.8 Hz), 1.26 (6H, s).

Workup

concentrationconcentrated in vacuo
customThe layers were separated
washthe organic layer was washed with brine
dry with materialdried (Na2SO4)
filtrationfiltered
customthe solvents removed under reduced pressure

Sources & evidence

ORD record: ord-bdc17530b06145a48dbf14c0d812caff
Source dataset: uspto-grants-2003_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06521624B1

Reaction notes

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