Bicyclo[2.2.1]heptane-1-methanesulfonic acid, 7,7-dimethyl-2-oxo-, (1S)- → HCID 86749572, compound

HRID 1739706Notes

Reaction equation

HRID 1739706 reaction equation
[N:1]12[CH2:9][CH:5]([C:6](=[O:8])[CH2:7]1)[CH2:4][CH2:3][CH2:2]2.[C:10]12([CH2:20][S:21]([OH:24])(=[O:23])=[O:22])[C:17]([CH3:19])([CH3:18])[CH:14]([CH2:15][CH2:16]1)[CH2:13][C:11]2=[O:12]>C(O)C>[C:10]12([CH2:20][S:21]([OH:24])(=[O:22])=[O:23])[C:17]([CH3:19])([CH3:18])[CH:14]([CH2:15][CH2:16]1)[CH2:13][C:11]2=[O:12].[N:1]12[CH2:9][CH:5]([C:6](=[O:8])[CH2:7]1)[CH2:4][CH2:3][CH2:2]2

Participants

4

Reactant 2

HCID 18462Bicyclo[2.2.1]heptane-1-methanesulfonic acid, 7,7-dimethyl-2-oxo-, (1S)-HCID 4183471-azabicyclo[3.2.1]octan-6-one

Product 1

HCID 86749572HCID 86749572, compound

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent2×

Conditions

Temperature
70 °C

Procedure

To a solution of (±) 1-azabicyclo[3.2.1]octan-6-one (124 g, 1 mol) in ethanol (100 ml) was added a solution of (+) camphorsulfonic acid (232 g, 1.0 mol) in 200 ml ethanol. The mixture was heated to 70° C. and slowly cooled over 2 hours to 5° C. The precipitated crystals were collected by filtration and washed with cold ethanol (3×40 ml). The crude compound was crystallized from ethanol (150 ml) giving the title compound in 57.3 g yield. M.p. 267-268° C. (decomp.). [α]D =+48° (water).

Workup

  1. temperatureslowly cooled over 2 hours to 5° C
  2. filtrationThe precipitated crystals were collected by filtration
  3. washwashed with cold ethanol (3×40 ml)
  4. customThe crude compound was crystallized from ethanol (150 ml)

Sources & evidence

ORD record
ord-5349c7971a1e468ab00907348f795430
Source dataset
uspto-grants-1999_10
Patent number
US05968926

Reaction notes

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