(Prop-2-yn-1-yl)cyclohexane → 2-Ethoxy-4-p-tolyl-6-(cyclohexylmethyl)-1,2-oxaphosphorin 2-oxide

HRID 1499004Notes

Reaction equation

HRID 1499004 reaction equation
CC(P(C(C)(C)C)[C:6]1[C:11]([C:12]2C=CC=[CH:14][CH:13]=2)=[CH:10][CH:9]=[CH:8][CH:7]=1)(C)C.[C:22]1([CH3:36])[CH:27]=[CH:26][C:25]([C:28]#[C:29][P:30](=[O:35])([OH:34])[O:31][CH2:32][CH3:33])=[CH:24][CH:23]=1.C(C1CCCCC1)C#C>[Au].ClC(Cl)C>[CH2:32]([O:31][P:30]1(=[O:34])[CH:29]=[C:28]([C:25]2[CH:24]=[CH:23][C:22]([CH3:36])=[CH:27][CH:26]=2)[CH:14]=[C:13]([CH2:12][CH:11]2[CH2:6][CH2:7][CH2:8][CH2:9][CH2:10]2)[O:35]1)[CH3:33]

Participants

6

Reactant 3

HCID 87265(Prop-2-yn-1-yl)cyclohexaneHCID 27342152-(Di-tert-butylphosphino)biphenyl2×HCID 71546601Ethyl hydrogen p-tolylethynylphosphonate

Product 1

HCID 900192492-Ethoxy-4-p-tolyl-6-(cyclohexylmethyl)-1,2-oxaphosphorin 2-oxideYield 64%

Reagents, catalysts & solvents 2

HCID 23985GoldCatalystHCID 63651,1-DichloroethaneSolvent2×

Procedure

A gold (Ag(I)) catalyst {[Au(JohnPhos)NCCH3]|SbF6—} [JohnPhos:(2-biphenyl)di-tert-butylphosphine] (11.3 mg, 0.015 mmol) was put into a reaction container, and dichloroethane (0.4 mL) was put thereinto. After stirring at room temperature for 5 minutes, ethyl hydrogen p-tolylethynylphosphonate (67.3 mg, 0.3 mmol) diluted with 0.5 mL of dichloroethane was added thereto, and finally, prop-2-ynylcyclohexane (73.2 mg, 0.6 mmol) was put thereinto. Then, when all of the starting materials disappeared in the TLC, the reaction was allowed to be completed. After the solvent was removed under low atmospheric pressure, the product was separated by chromatography to obtain 2-ethoxy-4-p-tolyl-6-(cyclohexylmethyl)-1,2-oxaphosphorin 2-oxide (66.5 mg, 64%) which is a title compound.

Workup

  1. additionwas added
  2. customAfter the solvent was removed under low atmospheric pressure
  3. customthe product was separated by chromatography

Sources & evidence

ORD record
ord-b19218f2dab046939aa8f396b1d66b9a
Source dataset
uspto-grants-2015_12
Patent number
US09200019B2

Reaction notes

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