- STUDIES OF COMPOUNDS IN THE MENTHANE SERIES. XIX. SYNTHESIS AND PROPERTIES OF TRANS-o-4-MENTHEN-8-OL AND STEREOISOMERIC o-5-METHEN-8-OLS
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Trans-o-4-Menthen-8-ol and cis- and trans-o-5-menthen-8-ols have been prepared via the Diels-Alder reactions of 1,3-butadiene with crotonaldehyde in the presence of boron trifluoride etherate, and piperylene with methyl acrylate, respectively.The dehydration reactions of these alcohols have been studied in the presence of acetic anhydride and potassium bisulfate; the latter reagent demonstrates a high reaction selectivity.
- Bazyl'chik, V. V.,Fedorov, P. I.,Klyuev, N. A.,Dank, E. Kh.
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p. 1320 - 1327
(2007/10/02)
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- ELECTROCHEMICAL HYDROXYSELENENYLATION AS A NEW METHOD FOR ONE-STEP PREPARATION OF α-ARYLSELENO-α,β-UNSATURATED ALDEHYDES FROM 3-HYDROXYALKYNES
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Electrochemical oxidation of 3-hydroxyalkynes in the presence of diaryl diselenides in MeCN-H2O provided α-arylseleno-α,β-unsaturated aldehydes 2 in 62-94percent yields via hydroxyselenenylation of alkynes.
- Uneyama, Kenji,Takano, Kunikaju,Torii, Sigeru
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p. 1161 - 1164
(2007/10/02)
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- CHEMISTRY OF ENOL ETHERS. LIII. PROTOTROPIC ISOMERIZATION IN THE SERIES OF CYCLIC 1-ALKOXY-1,4-DIENES
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A series of diethyl acetals of 1-cyclohexene-3-carbaldehydes, the pyrolysis of which leads to the formation of cyclic 1-ethoxy-1,4-dienes, were obtained by the acetalization of 1-cyclohexene-3-carbaldehydes, which were obtained by the condensation of conjugated dienes with α,β-unsaturated aldehydes.The prototropic isomerization of the 1-ethoxy-1,4-dienes to corresponding 1-ethoxy-1,3-dienes under the influence of potassium tert-butoxide in dimethyl sulfoxide solution was investigated.
- Makin, S. M.,Pomogaev, A. I.,Boiko, T. N.,Nikiforova, A. P.
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p. 2033 - 2036
(2007/10/02)
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