Lauric Acid → Dodecanoyl chloride

HRID 2251630Notes

Reaction equation

HRID 2251630 reaction equation
S(Cl)([Cl:3])=O.[C:5]([OH:18])(=O)[CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH3:16]>O>[C:5]([Cl:3])(=[O:18])[CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH3:16]

Participants

4

Reactant 2

HCID 3893Lauric AcidHCID 24386Thionyl Chloride3×

Product 1

HCID 8166Dodecanoyl chloride

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
45 °C

Procedure

In a dry 2-necked, round bottomed flask, equipped with a magnetic stirrer and fixed with a separatory funnel, containing 13.13 ml (180 mmol) of thionyl chloride, and a water condenser, is placed 20.03 g (100 mmol) of dodecanoic acid. Addition of the thionyl chloride is completed with heating to about 45° C. over the course of about 30 minutes. When addition of the thionyl chloride is complete the mixture is heated and stirred for an additional 45 minutes. The water condenser is then replaced with a distillation side arm condenser and the crude mixture is distilled. The crude distillate in the receiving flask is then fractionally distilled to obtain the acyl chloride, dodecanoyl chloride. This acyl chloride, 7.65 g (35 mmol), is put into a dry separatory funnel and combined with 50 ml of dry dichloromethane for use in the next step of the reaction.

Workup

  1. customIn a dry 2-necked, round bottomed flask, equipped with a magnetic stirrer
  2. customfixed with a separatory funnel
  3. temperatureis heated
  4. distillationthe crude mixture is distilled
  5. distillationThe crude distillate in the receiving flask is then fractionally distilled

Sources & evidence

ORD record
ord-5e89dcb1d77e4fcb9c849b18c687aa2b
Source dataset
uspto-grants-2008_01
Patent number
US07319157B1

Reaction notes

Loading…