Diethyl Ether → ((1S,2R,4aS,8aS)-2-hydroxy-2,5,5,8a-tetramethyldecahydronaphthalen-1-yl)methyl methanesulfonate

HRID 422130

Reaction equation

HRID 422130 reaction equation
[OH:1][CH2:2][C@@H:3]1[C@:12]2([CH3:13])[C@H:7]([C:8]([CH3:15])([CH3:14])[CH2:9][CH2:10][CH2:11]2)[CH2:6][CH2:5][C@@:4]1([CH3:17])[OH:16].CCN(CC)CC.[CH3:25][S:26](Cl)(=[O:28])=[O:27].CCOCC>CN(C=O)C>[CH3:25][S:26]([O:1][CH2:2][C@@H:3]1[C@:12]2([CH3:13])[C@H:7]([C:8]([CH3:15])([CH3:14])[CH2:9][CH2:10][CH2:11]2)[CH2:6][CH2:5][C@:4]1([OH:16])[CH3:17])(=[O:28])=[O:27]

Participants

6

Reactant 4

HCID 3283Diethyl EtherHCID 8471TriethylamineHCID 31297Methanesulfonyl chlorideHCID 10879261(1S,2R,4aS,8aS)-1-(hydroxymethyl)-2,5,5,8a-tetramethyl-decahydronaphthalen-2-ol

Product 1

HCID 58294786((1S,2R,4aS,8aS)-2-hydroxy-2,5,5,8a-tetramethyldecahydronaphthalen-1-yl)methyl methanesulfonateYield 96%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a mixture of (1S,2R,4aS,8aS)-1-(hydroxymethyl)-2,5,5,8a-tetramethyl-decahydronaphthalen-2-ol (3) (4.66 g, 19.4 mmol)) and Et3N (7.01 mL, 50.4 mmol)) in DMF (40 mL) was added methanesulfonyl chloride (2.66 g, 23.3 mmol) dropwise at 0° C. After stirring at room temperature for 3 h, ether (400 mL) was added. The organics were washed with 1N HCl (20 mL), saturated aqueous sodium bicarbonate (20 mL), brine (2×20 mL), dried (Na2SO4), and concentrated to give ((1S,2R,4aS,8aS)-2-hydroxy-2,5,5,8a-tetramethyldecahydronaphthalen-1-yl)methyl methanesulfonate (12) (5.90 g, 96%) as a light yellow sticky mass.

Workup

  1. washThe organics were washed with 1N HCl (20 mL), saturated aqueous sodium bicarbonate (20 mL), brine (2×20 mL)
  2. dry with materialdried (Na2SO4)
  3. concentrationconcentrated

Sources & evidence

ORD record
ord-c6e33cfc2154442db5fb475b53fc6eb5
Source dataset
uspto-grants-2012_01
Patent number
US08101605B2

Linked notes

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