Delta-Valerolactone → HCID 13105375, compound

HRID 1981225Notes

Reaction equation

HRID 1981225 reaction equation
C([Li])CCC.[C:6]1([P:12](=[O:30])([C:24]2[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=2)[CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][CH2:21][CH2:22][CH3:23])[CH:11]=[CH:10][CH:9]=[CH:8][CH:7]=1.[C:31]1(=[O:37])[O:36][CH2:35][CH2:34][CH2:33][CH2:32]1>CCCCCC.O1CCCC1>[OH:37][CH2:31][CH2:32][CH2:33][CH2:34][C:35]([CH:13]([P:12](=[O:30])([C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1)[C:6]1[CH:7]=[CH:8][CH:9]=[CH:10][CH:11]=1)[CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][CH2:21][CH2:22][CH3:23])=[O:36]

Participants

6

Reactant 3

HCID 10953Delta-ValerolactoneHCID 13105374HCID 13105374, compoundHCID 178418339Butyllithium

Product 1

HCID 13105375HCID 13105375, compound

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolvent2×HCID 8058HexaneSolvent

Procedure

1.6M n-Butyl lithium solution in hexane (56 ml) was added to a stirred solution of the phosphine oxide (31.0 g) in dry tetrahydrofuran (400 ml) at -40° to -45° C. under nitrogen. The deep orange solution was stirred for 10 minutes at -40° to -50° C., then a solution of valerolactone (9.0 g) in dry tetrahydrofuran was added. The pale solution was allowed to warm to room temperature, poured on to ice and extracted with ether. The extract was dried and evaporated and the residue was crystallised from ether-petroleum spirit to give 1-(5-hydroxypentanoyl)undecyl-diphenylphosphine oxide, m.p. 70° C.

Workup

  1. additionpoured on to ice
  2. extractionextracted with ether
  3. customThe extract was dried
  4. customevaporated
  5. customthe residue was crystallised from ether-petroleum spirit

Sources & evidence

ORD record
ord-be69411727394e9684c9ad04f10426a6
Source dataset
uspto-grants-1985_04
Patent number
US04513005

Reaction notes

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