Hydrochloric Acid → 3-(Hexadecyloxy)-2-(tetradecyloxy)propan-1-OL

HRID 1756151Notes

Reaction equation

HRID 1756151 reaction equation
C(Br)CCCCCCCCCCCCC.[OH-].[K+].C(C(C(CO)O)O)C1C=CC=CC=1.[CH2:31]([O:47][CH2:48][CH:49]([CH2:67][OH:68])[O:50][CH2:51][CH2:52][CH2:53][CH2:54][CH2:55][CH2:56][CH2:57][CH2:58][CH2:59][CH2:60][CH2:61][CH2:62][CH2:63][CH2:64]CC)[CH2:32][CH2:33][CH2:34][CH2:35][CH2:36][CH2:37][CH2:38][CH2:39][CH2:40][CH2:41][CH2:42][CH2:43][CH2:44][CH2:45][CH3:46].C(OCC(COC(C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)OCCCCCCCCCCCCCC)CCCCCCCCCCCCCCC.Cl>C1(C)C=CC=CC=1>[CH2:31]([O:47][CH2:48][CH:49]([CH2:67][OH:68])[O:50][CH2:51][CH2:52][CH2:53][CH2:54][CH2:55][CH2:56][CH2:57][CH2:58][CH2:59][CH2:60][CH2:61][CH2:62][CH2:63][CH3:64])[CH2:32][CH2:33][CH2:34][CH2:35][CH2:36][CH2:37][CH2:38][CH2:39][CH2:40][CH2:41][CH2:42][CH2:43][CH2:44][CH2:45][CH3:46]

Participants

8

Reactant 6

HCID 313Hydrochloric AcidHCID 8208Myristyl bromideHCID 14797Potassium HydroxideHCID 1025482,3-Bis(hexadecyloxy)propan-1-olHCID 2735483BenzylglycerolHCID 571290511-Hexadecyl-2-tetradecyl-3-trityl glycerol

Product 1

HCID 571281113-(Hexadecyloxy)-2-(tetradecyloxy)propan-1-OL

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Procedure

1-hexadecyl glycerol (105g, 0.33mol) and 93 g (0.33mol) tritylchloride were dissolved in 300 ml of pyridine. The mixture was heated at 100° C. for 16 hours. After cooling to room temperature 1500 ml of ethyl ether was added and the slurry washed 3 times with cold 0.5N H2SO4, 5% sodium bicarbonate and 2 times with water. The organic phase was dried over MgSO4, the ether removed on a rotary evaporator and the residue recrystallized from ethanol, yielding the intermediate 1-hexadecyl-3-trityl glycerol (129 g, 70%). The 2 position of this intermediate was alkylated with tetradecyl bromide in the same manner (powdered KOH in toluene) as described earlier for the dialkylation of benzyl glycerol in the preparation of 1,2-dihexadecyl glycerol. The resulting 1-hexadecyl-2-tetradecyl-3-trityl glycerol (128 g) was dissolved in 300 ml of petroleum ether. At room temperature 30 g of anhydrous hydrogen chloride was added. A precipitate formed within a short time. The slurry was stirred at room temperature for 4 hours and then filtered. The solids were recrystallized from acetone (10° C.) to give 45.6g of product, m.p. 42°-3° C.

Workup

  1. customA precipitate formed within a short time
  2. filtrationfiltered
  3. customThe solids were recrystallized from acetone (10° C.)

Sources & evidence

ORD record
ord-3b65bd4dbfcd4e5d942109716f851f3d
Source dataset
uspto-grants-1995_08
Patent number
US05439944

Reaction notes

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