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Solvent Studies of the Cycloaddition...

Helwig, William.

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Solvent Studies of the Cycloaddition Reactions of Tricarbonyl[2-ethoxy-3-phenylvinylketene]iron(0) with Alkynes.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Solvent Studies of the Cycloaddition Reactions of Tricarbonyl[2-ethoxy-3-phenylvinylketene]iron(0) with Alkynes./
作者:	Helwig, William.
面頁冊數:	85 p.
附註:	Source: Masters Abstracts International, Volume: 52-05.
Contained By:	Masters Abstracts International52-05(E).
標題:	Organic chemistry. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1525141
ISBN:	9781303828096

Solvent Studies of the Cycloaddition Reactions of Tricarbonyl[2-ethoxy-3-phenylvinylketene]iron(0) with Alkynes.
Helwig, William.

Solvent Studies of the Cycloaddition Reactions of Tricarbonyl[2-ethoxy-3-phenylvinylketene]iron(0) with Alkynes. - 85 p.

Source: Masters Abstracts International, Volume: 52-05.

Thesis (M.S.)--Long Island University, The Brooklyn Center, 2014.

A novel solvent study was employed to interpret solvent and coordination effects on the cycloaddition of methyl propiolate and tricarbonyl [2-ethoxy-3-phenylvinylketene] Iron(0) in eight different organic solvents (cyclohexanes, toluene, 1, 2- dichloroethane, 1, 4- dioxane, 2-methyl tetrahydrofuran, tetrahydrofuran, acetonitrile, and dimethylformamide) to yield moderate yields of one regiosiomer product that was extrapolated from a semi-quantitative standard curve measured against biphenyl integral ratios. The reaction was monitored by Gas Chromatography Mass Spectrometry (GC-MS) and products were confirmed by proton, and carbon NMR, and GC-MS. Trimerization products were observed as the major by-products. A second study involved the cycloaddition between prop-2-ynal and tricarbonyl [2-ethoxy-3phenylvinylketene] Iron(0) that yielded moderate yields of one regiosiomer with no trimerization products. The product was confirmed by GC-MS, proton and carbon NMR. Both reactions involved a net [4+2] cycloaddition between alkyne and eta4-iron(0) vinylketene.

ISBN: 9781303828096Subjects--Topical Terms:

523952
Organic chemistry.

Solvent Studies of the Cycloaddition Reactions of Tricarbonyl[2-ethoxy-3-phenylvinylketene]iron(0) with Alkynes.
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500 $a Adviser: Nadarajah Vasanthan.
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520 $a A novel solvent study was employed to interpret solvent and coordination effects on the cycloaddition of methyl propiolate and tricarbonyl [2-ethoxy-3-phenylvinylketene] Iron(0) in eight different organic solvents (cyclohexanes, toluene, 1, 2- dichloroethane, 1, 4- dioxane, 2-methyl tetrahydrofuran, tetrahydrofuran, acetonitrile, and dimethylformamide) to yield moderate yields of one regiosiomer product that was extrapolated from a semi-quantitative standard curve measured against biphenyl integral ratios. The reaction was monitored by Gas Chromatography Mass Spectrometry (GC-MS) and products were confirmed by proton, and carbon NMR, and GC-MS. Trimerization products were observed as the major by-products. A second study involved the cycloaddition between prop-2-ynal and tricarbonyl [2-ethoxy-3phenylvinylketene] Iron(0) that yielded moderate yields of one regiosiomer with no trimerization products. The product was confirmed by GC-MS, proton and carbon NMR. Both reactions involved a net [4+2] cycloaddition between alkyne and eta4-iron(0) vinylketene.
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