Hydrochloric Acid → Cyclopropanesulfonic acid (18-hydroxy-2,15-dioxo-3,14,16-triaza-tricyclo-[14.3.0.0*4,6*]nonadec-7-ene-4-carbonyl)-amide

HRID 1445430Notes

Reaction equation

HRID 1445430 reaction equation
C(OC[O:5][CH:6]1[CH2:24][CH:23]2[N:8]([C:9](=[O:45])[N:10](CC3C=CC(OC)=CC=3)[CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH:16]=[CH:17][CH:18]3[C:20]([C:26]([NH:28][S:29]([C:32]4(C)[CH2:34][CH2:33]4)(=[O:31])=[O:30])=[O:27])([NH:21][C:22]2=[O:25])[CH2:19]3)[CH2:7]1)C.Cl.C(=O)([O-])O.[Na+]>C1COCC1.CO>[OH:5][CH:6]1[CH2:24][CH:23]2[N:8]([C:9](=[O:45])[NH:10][CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH:16]=[CH:17][CH:18]3[C:20]([C:26]([NH:28][S:29]([CH:32]4[CH2:33][CH2:34]4)(=[O:31])=[O:30])=[O:27])([NH:21][C:22]2=[O:25])[CH2:19]3)[CH2:7]1

Participants

5

Reactant 3

HCID 313Hydrochloric AcidHCID 516892Sodium BicarbonateHCID 722366171-Methyl-cyclopropanesulfonic acid [18-ethoxymethoxy-14-(4-methoxy-benzyl)-2,15-dioxo-3,14,16-triaza-tricyclo[14.3.0.0*4,6*]nonadec-7-ene-4-carbonyl]-amide

Product 1

HCID 72236613Cyclopropanesulfonic acid (18-hydroxy-2,15-dioxo-3,14,16-triaza-tricyclo-[14.3.0.0*4,6*]nonadec-7-ene-4-carbonyl)-amideYield 73.3%

Reagents, catalysts & solvents 1

HCID 21899815MeOH tetrahydrofuranSolvent

Procedure

A solution of the acetal 139 (0.038 g, 0.06 mmol) in 1:1:1 THF-methanol-2 M aq. hydrochloric acid (1.5 ml) was stirred at rt for 30 min, then additional conc. hydrochloric acid (0.1 ml) was added and then stirred at rt overnight. The reaction mixture was then neutralized using aq. saturated sodium hydrogen carbonate, then concentrated onto silica. Flash chromatography of the residue using 9:1 ethyl acetate-methanol gave a colorless foam (0.020 g, 73%). LR-MS: Calcd for C20H29N4O6S: 453. Found: 453 [M−H].

Workup

  1. concentrationconcentrated onto silica

Sources & evidence

ORD record
ord-8643ea79c3764c29aa9a07dcfc04b5f4
Source dataset
uspto-grants-2010_02
Patent number
US07666834B2

Reaction notes

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