141858-79-9Relevant academic research and scientific papers
Determining the excited-state substituent constants of furyl and thienyl groups
Qu, Junyan,Cao, Chao-Tun,Cao, Chenzhong
supporting information, (2018/04/24)
Six series of styrene derivatives XCH═CHArY (total of 65) containing the styrene parent molecular skeleton were synthesized (here, Y is OMe, Me, H, F, Cl, CF3, CN, and NO2, and X is 2-furyl, 3-furyl, 2′-methyl-2-furyl, 2-thienyl, 3-thienyl, and 2′-methyl-2-theniyl). Their ultraviolet absorption spectra were measured in anhydrous ethanol, and their wavelength of absorption maximum λmax was recorded. For the wavenumber νmax (cm?1, νmax?=?1/λmax) of the obtained λmax, a quantitative correlation analysis was performed, and 6 excited-state substituent constants σexcc(p) of groups X were obtained by means of curve-fitting method. Taking the νmax values of total 90 compounds of styrene derivatives as a data set (including 25 compounds from reference and 65 compounds of this work), a quantitative correlation analysis was performed, and the reliability of the obtained σexcc(p) was verified. In addition, 12 samples of disubstituted Schiff bases (XCH═NArY) involving the above groups X were synthesized, and their νmax values were recorded. Using these 12 νmax together with the 14 νmax values of Schiff bases taken from reference (total of 26 compounds), it was further verified that the σexcc(p) values are reliable by means of quantitative correlation method.
Practical Heck-Mizoroki coupling protocol for challenging substrates mediated by an N-heterocyclic carbene-ligated palladacycle
Kantchev, Eric Assen B.,Peh, Guang-Rong,Zhang, Chi,Ying, Jackie Y.
supporting information; experimental part, p. 3949 - 3952 (2009/05/30)
(Chemical Equation Presented) A highly active, N-heterocyclic carbene-palladacycle precatalyst for the Heck-Mizoroki reaction was rationally designed. The complex can be synthesized on a large scale in excellent yield by a novel, one-pot, three-component reaction and is tolerant to air, moisture, and long-term storage. A wide range of challenging substrates is successfully coupled under a simple and user-friendly reaction protocol.
PALLADIUM-MEDIATED REACTION BETWEEN ARYL IODIDES AND STEREODEFINED 2-ARYLETHENYLDIMETHYLPHENYLSILANES OR 2-ARYLETHYNYLDIMETHYLPHENYLSILANES, IN THE PRESENCE OF A FLUORIDE ION SOURCE
Rossi, Renzo,Carpita, Adriano,Messeri, Tommaso
, p. 65 - 72 (2007/10/02)
Stereodefined 2-arylethenyldimethylphenylsilanes, 1, do react with aryl iodides, 6, containing an electron-donating substituent as well as with 2-thienyl iodide, 7, in the presence of a catalytic amount of a palladium complex and a molar excess of a 1 M T
