Sodium Carbonate → Methyl 1-[4-(2-nitrobenzenesulfonyl)-piperazin-1-yl]-cyclopropanecarboxylate

HRID 1961679Notes

Reaction equation

FC(F)(F)S(O[CH2:7][CH2:8][N:9]([CH2:22][CH2:23]OS(C(F)(F)F)(=O)=O)[S:10]([C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][C:14]=1[N+:19]([O-:21])=[O:20])(=[O:12])=[O:11])(=O)=O.Cl.[NH2:35][C:36]1([C:39]([O:41][CH3:42])=[O:40])[CH2:38][CH2:37]1.C(=O)([O-])[O-].[Na+].[Na+]>C(#N)C.C(OCC)(=O)C>[N+:19]([C:14]1[CH:15]=[CH:16][CH:17]=[CH:18][C:13]=1[S:10]([N:9]1[CH2:8][CH2:7][N:35]([C:36]2([C:39]([O:41][CH3:42])=[O:40])[CH2:38][CH2:37]2)[CH2:23][CH2:22]1)(=[O:11])=[O:12])([O-:21])=[O:20]

Participants

Conditions

Temperature: 60 °C

Procedure

A solution of N,N-bis-(2-trifluoromethanesulfonyloxyethyl)-2-nitrobenzenesulfonamide (1.83 g, 3.30 mmol) from Example 16B and methyl 1-aminocyclopropane-1-carboxylate HCl (0.50 g, 3.30 mmol) in anhydrous acetonitrile (10 mL) was treated with sodium carbonate (1.40 g, 13.2 mmol) and heated overnight at 60° C. (J. A. Kozlowski, et al., Bioorg. Med. Chem. Lett. 12: 791-794, 2002). Reaction diluted with ethyl acetate, washed with water and brine, dried over Na2SO4, filtered, and concentrated under reduced pressure. The residue was purified by normal phase HPLC on a Biotage pre-packed silica gel column eluting with 3:1 hexane:ethyl acetate to afford the title compound. MS (ESI) m/z 370 (M+H)+.

Workup

customReaction
washwashed with water and brine
dry with materialdried over Na2SO4
filtrationfiltered
concentrationconcentrated under reduced pressure
customThe residue was purified by normal phase HPLC on a Biotage pre-packed silica gel column
washeluting with 3:1 hexane

Sources & evidence

ORD record: ord-2ed7f7e8ef1347c2bf1c73416a546082
Source dataset: uspto-grants-2013_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08415354B2

Reaction notes

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