Thionyl Chloride → 1-(Prop-2-en-1-yl)cyclopropane-1-sulfonyl chloride

HRID 2405571Notes

Reaction equation

HRID 2405571 reaction equation
[CH2:1]([C:4]1([S:7]([O-:10])(=O)=[O:8])[CH2:6][CH2:5]1)[CH:2]=[CH2:3].[K+].S(Cl)([Cl:14])=O>CN(C=O)C>[CH2:1]([C:4]1([S:7]([Cl:14])(=[O:10])=[O:8])[CH2:6][CH2:5]1)[CH:2]=[CH2:3]

Participants

4

Reactant 2

HCID 24386Thionyl ChlorideHCID 467801201-Allylcyclopropanesulfonic Acid Potassium Salt

Product 1

HCID 441819591-(Prop-2-en-1-yl)cyclopropane-1-sulfonyl chloride

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideCatalyst

Procedure

A solution of potassium 1-allylcyclopropane-1-sulfonate (3.44 g, 17.2 mmol), thionyl chloride (10 ml) and DMF (5 drops) was refluxed at 60° C. for 16 h. The volatiles evaporated under reduced pressure and the residue extracted with CH2Cl2 (50 ml). The extract was washed with water, dried (MgSO4) and evaporated to obtain the crude product as yellow gummy oil which was washed with hexane and used in the next reaction without further purification (2.7 g, 15 mmol, 87%). 1HNMR (300 MHz, CDCl3): δ 5.728 (m, 1H), 5.191 (t, 2H), 2.9 (d, 2H), 0.756 (m, 2H), 0.322 (m, 2H).

Workup

  1. customThe volatiles evaporated under reduced pressure
  2. extractionthe residue extracted with CH2Cl2 (50 ml)
  3. washThe extract was washed with water
  4. dry with materialdried (MgSO4)
  5. customevaporated

Sources & evidence

ORD record
ord-6b3bd7c2eb1e44eb9e08fbc950ab7d3a
Source dataset
uspto-grants-2014_08
Patent number
US08808742B2

Reaction notes

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