34875-03-1Relevant academic research and scientific papers
Soluble and polymer-supported 2- and 3-benzylated furans for the preparation of α,β-ethylenic carbonyl compounds
Albert, Sébastien,Soret, Adrien,Blanco, Luis,Deloisy, Sandrine
, p. 2888 - 2900 (2007/10/03)
Soluble and polymer-supported 2- and 3-benzylated furans were subjected to a sequence involving a Diels-Alder reaction with α,β-acetylenic carbonyl compounds, a Michael addition, and a subsequent retro-Diels-Alder reaction to yield olefinic compounds. On solid support, this traceless strategy is advantageous since pure compounds were released in the thermal cycloreversion step. The fur-2-ylated resin allowed a highly diastereoselective synthesis.
Copper-catalyzed synthesis of vinyl sulfides
Bates, Craig G.,Saejueng, Pranorm,Doherty, Michael Q.,Venkataraman
, p. 5005 - 5008 (2007/10/03)
(Chemical Equation Presented) We report a method for the synthesis of vinyl sulfides using the soluble copper(I) catalyst [Cu(phen)(PPh3) 2]NO3. The desired vinyl sulfides are obtained in good to excellent yields, with retention of stereochemistry. This protocol tolerates a wide variety of functional groups or substrates, is palladium-free, and does not require the use of expensive or air-sensitive additives.
Kinetics of the reaction of sodium thiophenoxide with methyl 3-arylpropynoates in DMF
Hamed, Ezzat A.
, p. 102 - 104 (2007/10/03)
Methyl 3-arylpropynoates react with thiophenoxide ion in DMF containing 0.5% MeOH to give an isomeric mixture of Z- and E-methyl 3-aryl-3-phenylthiopropenoates. It has been found that the rate constant depends on the methanol concentration indicating a third order reaction. The plot of log k3 values versus Hammett σ constants varies between 0.42 to 0.77 depending on temperature. The activation parameters and ρ values indicate that the reaction proceeds via a concerted mechanism.
The Compounds Related to 3-(1-Imidazolyl)-2-alken-1-ones. Preparation and Reactions
Kashima, Choji,Tajima, Tadakuni,Omote, Yoshimori
, p. 171 - 176 (2007/10/02)
Compounds related to 3-(1-imidazolyl)-2-alken-1-ones, 3-(1-imidazolyl)-2-alkenoic acid derivatives and 2-alken-1-ones having heterocycles on the C-3 carbon were prepared.The reaction of nucleophiles with these compounds was also discussed.
ADDITION OF THIOLS TO DERIVATIVES OF PHENYLPROPYNOIC ACID
Rasteikene, L. P.,Vidugirene, V. I.,Talaikite, Z. A.,Lukoshyavichyute, N. M.
, p. 647 - 651 (2007/10/02)
The reaction of thiophenol and benzyl hydrosulfide with phenylpropynoic acid, its methyl ester, and its anilide was investigated.The addition of thiophenol takes place regioselectively.Under the conditions of a radical reaction derivatives of 2-phenylthio
Substitution and Elimination Reactions in Chloro Olefins. 3. Reactions of Methyl β-Chlorocinnamates with Thiophenoxide Ion
Youssef, Abdel-Hamid A.,Sharaf, Saber M.,El-Sadany, Samir K.,Hamed, Ezzat A.
, p. 3813 - 3816 (2007/10/02)
The reactions of a series of para-substituted (Z)-methyl β-chlorocinnamates with thiophenoxide ion in methanol have been studied and their rates measured.The products are the corresponding β-phenylthio esters with retention of configuration with the excep
