Hydrochloric Acid → (2R)-2-[4-(2-Aminoethoxy)phenyl]-2-({[4-(2-butynyloxy)phenyl]sulfonyl)amino)-N-hydroxyethanamide

HRID 2084905Notes

Reaction equation

HRID 2084905 reaction equation
[CH2:1]([O:5][C:6]1[CH:11]=[CH:10][C:9]([S:12]([NH:15][C@H:16]([C:21]2[CH:37]=[CH:36][C:24]([O:25][CH2:26][CH2:27][NH:28]C(=O)OC(C)(C)C)=[CH:23][CH:22]=2)[C:17]([NH:19][OH:20])=[O:18])(=[O:14])=[O:13])=[CH:8][CH:7]=1)[C:2]#[C:3][CH3:4].Cl>ClCCl.CCOCC>[NH2:28][CH2:27][CH2:26][O:25][C:24]1[CH:36]=[CH:37][C:21]([C@@H:16]([NH:15][S:12]([C:9]2[CH:8]=[CH:7][C:6]([O:5][CH2:1][C:2]#[C:3][CH3:4])=[CH:11][CH:10]=2)(=[O:14])=[O:13])[C:17]([NH:19][OH:20])=[O:18])=[CH:22][CH:23]=1

Participants

5

Reactant 2

HCID 313Hydrochloric AcidHCID 54233279tert-butyl 2-{4-[(1R)-1-({[4-(2-butynyloxy)phenyl]sulfonyl}amino)-2-(hydroxyamino)-2-oxoethyl]phenoxy}ethylcarbamate2×

Product 1

HCID 10320652(2R)-2-[4-(2-Aminoethoxy)phenyl]-2-({[4-(2-butynyloxy)phenyl]sulfonyl)amino)-N-hydroxyethanamideYield 98.3%

Reagents, catalysts & solvents 2

HCID 3283Diethyl EtherSolventHCID 6344DichloromethaneSolvent

Procedure

Through a solution of 0.354 g (0.664 mmol) of the product of Example 199, tert-butyl 2-{4-[(1R)-1-({[4-(2-butynyloxy)phenyl]sulfonyl}amino)-2-(hydroxyamino)-2-oxoethyl]phenoxy}ethylcarbamate, in 10 mL of dichloromethane was bubbled hydrogen chloride gas for 10 minutes. The reaction was stoppered and let sit at room temperature for 30 minutes. The reaction was then diluted with 15 mL of ether and the resulting white precipitate was collected by filtration and dried in vacuo to give 0.283 g of (2R)-2-[4-(2-Aminoethoxy)phenyl]-2-({[4-(2-butynyloxy)phenyl]sulfonyl}amino)-N-hydroxyethanamide as a white solid. Electrospray Mass Spec 434.3 (M+H)+.

Workup

  1. filtrationthe resulting white precipitate was collected by filtration
  2. customdried in vacuo

Sources & evidence

ORD record
ord-b497ed1c353d4a13b19d283724ca0021
Source dataset
uspto-grants-2004_04
Patent number
US06716833B2

Reaction notes

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