1-chloro-N-(2-chloro-4-fluoro-5-isocyanatophenyl)methanesulfonamide → 1-chloro-N-[2-chloro-4-fluoro-5-(hexahydro-7-hydroxy-1,3-dioxoimidazo[1,5-a]pyridin-2(3H)-yl)phenyl]methanesulfonamide

HRID 1107256

Reaction equation

HRID 1107256 reaction equation
[Cl:1][CH2:2][S:3]([NH:6][C:7]1[CH:12]=[C:11]([N:13]=[C:14]=[O:15])[C:10]([F:16])=[CH:9][C:8]=1[Cl:17])(=[O:5])=[O:4].[OH:18][C@H:19]1[CH2:24][CH2:23][NH:22][C@@H:21]([C:25](OC)=[O:26])[CH2:20]1>ClCCl>[Cl:1][CH2:2][S:3]([NH:6][C:7]1[CH:12]=[C:11]([N:13]2[C:25](=[O:26])[CH:21]3[CH2:20][CH:19]([OH:18])[CH2:24][CH2:23][N:22]3[C:14]2=[O:15])[C:10]([F:16])=[CH:9][C:8]=1[Cl:17])(=[O:4])=[O:5]

Participants

4

Reactant 2

HCID 110774021-chloro-N-(2-chloro-4-fluoro-5-isocyanatophenyl)methanesulfonamideHCID 11321108methyl (2R,4S)-4-hydroxypiperidine-2-carboxylate

Product 1

HCID 187868841-chloro-N-[2-chloro-4-fluoro-5-(hexahydro-7-hydroxy-1,3-dioxoimidazo[1,5-a]pyridin-2(3H)-yl)phenyl]methanesulfonamide

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

To a solution of the title compound of Example 1, Step E (4.54 g, 15.2 mmol) in dichloromethane (20 mL) was added dropwise a solution of methyl cis-4-hydroxy-2-piperidinecarboxylate (2.41 g, 15.2 mmol, prepared as described in J. Org. Chem. (1991), 4084) in dichloromethane (20 mL) at room temperature. The reaction was stirred at room temperature for 20 hours, quenched by the addition of water, and the aqueous layer was extracted with dichloromethane. The combined organic layers were washed with water and dried over magnesium sulfate. The solvent was removed under reduced pressure and the title compound of Step A, a compound of this invention, was isolated as a foam by flash chromatography (4.98 g). 1H NMR (Me2SO-d6) δ 10.1 (br s, 1H), 7.75 (m, 1H), 7.4 (dd, 1H), 5.1 (m, 1H), 4.9 (s, 2H), 4.1-3.9 (m, 3H), 3.75 (m, 1H), 2.95 (m, 1H), 2.05 (m, 1H), 1.9 (br d, 1H), 1.2 (m, 1H).

Workup

  1. customquenched by the addition of water
  2. extractionthe aqueous layer was extracted with dichloromethane
  3. washThe combined organic layers were washed with water
  4. dry with materialdried over magnesium sulfate
  5. customThe solvent was removed under reduced pressure

Sources & evidence

ORD record
ord-be68f129a4b0472e8a63f49890fa324a
Source dataset
uspto-grants-2000_05
Patent number
US06060432

Linked notes

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