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Chemical Structure| 31646-64-7 Chemical Structure| 31646-64-7

Structure of 31646-64-7

Chemical Structure| 31646-64-7

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Product Details of [ 31646-64-7 ]

CAS No. :31646-64-7
Formula : C8H14O2
M.W : 142.20
SMILES Code : OC1C(O)CC(C=C)CC1

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Application In Synthesis of [ 31646-64-7 ]

* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

  • Downstream synthetic route of [ 31646-64-7 ]

[ 31646-64-7 ] Synthesis Path-Downstream   1~6

  • 1
  • [ 106-86-5 ]
  • [ 31646-64-7 ]
YieldReaction ConditionsOperation in experiment
> 95% With water; at 20℃; for 5h;Conversion of starting material; A 250 ml slurry reactor was loaded with the catalyst (25 g; 16 wt %), deionized water (100 g; 5.55 mol) and 4-vinylcyclohexene-1,2-epoxide (75 g; 0.6 mol). The mixture was vigorously stirred at ambient condition for 5 hours. An end of run sample was taken for analysis by NMR. The conversion of epoxide (compound 1) was >99%, and the yield of diol (compound 2) was >95%.
> 95% With water;Amberlyst 15 resin; at 20℃; for 24h;Conversion of starting material; 63.86 g. VCHO (0.5 mol) was added in a beaker containing 90 g. D.I. water (5 mol) and 30 g. Amberlyst 15 catalyst. The mixture was stirred at room temperature for 24 hrs. The conversion was >99%, and the yield was >95%.
85% With hydrogenchloride; at 20℃; Scheme 3. Metathesis reaction failed to synthesize the target compound.We first attempted the synthesis of a two carbon linker target compound 1 (Scheme 3) by olefin metathesis. In this attempt, we started from the commercial available epoxide (compound72, Scheme 3) which when treated with conc HC1 afforded diol (compound 3, Scheme3) in 85% yield. Tris(cetylpyridinium) 12-tungstophosphate (CWP) catalyzed oxidation of compound 3, Scheme 3, with H202 gave ethylene hexanedioic acid compound 4, Scheme3, in 60% yield. Chlorination of compound 4, Scheme3, with oxalyl chloride and subsequently methylation afforded the dimethyl ester (compound 5, Scheme 3) in 70% yield. Cyclization of compound 5, Scheme3, with acetamidine and potassium tertbutoxide in DMF provided ethylene cyclopenta[d]pyrimidine (compound 6, Scheme 3) in 50% yield. Different conditions including Grubbs j22 and jj23 failed to provide metathesis of compound 6, Scheme3, with 4- methoxycarbonyl styrene. These failures were probably due to the conjugated olefin with the phenyl ring in styrene.
With water;perchloric acid; In tetrahydrofuran; at 0 - 20℃; for 3h; A 1-liter three-neck round flask equipped with a mechanical stirrer, thermometer, and a dropping funnel was charged with 600 mL tetrahydrofuran (THF). 52 mL. VCHO (0.4 mol) was added into the flask. The solution was cooled down to 0 C. in an ice-bath. 22.96 g. perchloric acid (70%) was dissolved in 80 mL D.I. water, and added into the solution dropwise during a period of one hour. The solution temperature was controlled at below 5 C. After the addition of perchloric acid, the ice-bath was removed, and the solution was stirred for 2 hrs at room temperature. Then, 28-g. potassium carbonate in 40 mL water was added to neutralize perchloric acid. The mixture was roto-vaporated to remove some THF. The residue was extracted with ether. After drying the ether solution with anhydrous potassium sulfate, the ether solvent was removed by rotovap. The crude VCHD was distilled at a reduced pressure. VCHD product was collected at 99-106 C. under 0.05 mm Hg. pressure.

  • 2
  • [ 106-86-5 ]
  • [ 31646-64-7 ]
  • [ 83185-49-3 ]
  • [ 83185-50-6 ]
  • 3
  • [ 100-40-3 ]
  • [ 106-86-5 ]
  • [ 5116-65-4 ]
  • [ 31646-64-7 ]
  • 5
  • [ 100-40-3 ]
  • [ 64-19-7 ]
  • [ 106-86-5 ]
  • [ 31646-64-7 ]
  • 4-vinylcyclohexanediol-1,2 monoacetate [ No CAS ]
  • 6
  • [ 106-86-5 ]
  • [ 60-29-7 ]
  • [ 31646-64-7 ]
YieldReaction ConditionsOperation in experiment
With sulfuric acid; In water; acetone; Example E3 1,2-dihydroxy-4-vinylcyclohexane of a raw material for an objective compound was prepared according to the reaction scheme. Into a two-neck flask (100 ml) were fed 15.9 g (128 mmol) of 4-vinylcyclohexene-1,2-epoxide, 40 ml of water, 20 ml of acetone, and 40 mul of sulfuric acid, and the reaction mixture was refluxed at 75 C. for 4 hours. After complete reaction, an object compound was extracted with each 60 ml of diethylether four times, and was washed with saturated salt solution, and then was dried with sodium sulfate. The solvent was evaporated to obtain 1,2-dihydroxy-4-vinylcyclohexane. yield (weight): 16.4 g yield (ratio): 90%
 

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