21070-71-3Relevant academic research and scientific papers
ORGANIC COMPOUNDS
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Paragraph 0062; 0063, (2017/04/29)
A method of imparting to, or modifying in, a comestible product, umami taste, including the addition to a comestible product base of at least one compound of formula (I) wherein one of X1, X2, or X3 is selected from the group consisting of S, N and O and the remaining two are CH2; and A is selected from in which R1, R2, R3, R4 R5, R6 are independently selected from the group consisting of H, methyl, ethyl, propyl, OH, OMe, OEt, COOH, COOR7, in which R7 is selected from linear or branched C1-C7 alkyl, and CONR8R9, in which R8 and R9 are independently selected from hydrogen and straight or branched C1-C4 alkyl; or any two adjacent substituents R2-R6 together form a ring of 5 or 6 members; and n is 1 or 0.
Lewis acid activation of pyridines for nucleophilic aromatic substitution and conjugate addition
Abou-Shehada, Sarah,Teasdale, Matthew C.,Bull, Steven D.,Wade, Charles E.,Williams, Jonathan M. J.
, p. 1083 - 1087 (2015/03/30)
A clean, mild and sustainable method for the functionalization of pyridines and their analogues is reported. A zinc-based Lewis acid is used to activate pyridine and its analogues towards nucleophilic aromatic substitution, conjugate addition, and cyclization reactions by binding to the nitrogen on the pyridine ring and activating the pyridine ring core towards further functionalization.
A recyclable biphasic system for stereoselective and easily handled hydrochalcogenations
Tidei, Caterina,Sancineto, Luca,Bagnoli, Luana,Battistelli, Benedetta,Marini, Francesca,Santi, Claudio
supporting information, p. 5968 - 5975 (2015/03/30)
Vinyl selenides and vinyl sulfides were prepared by hydrochalcogenation of alkynes with selenols and thiols generated in situ by the reduction of the corresponding diselenides and disulfides with elemental zinc in a biphasic acidic medium. The yields, ste
Intramolecular assistance of electron transfer from heteroatom compounds. Electrochemical oxidation of 2-(2-pyridyl)ethyl-substituted ethers, sulfides, and selenides
Watanabe, Mitsuru,Suga, Seiji,Yoshida, Jun-Ichi
, p. 243 - 247 (2007/10/03)
Organoheteroatom compounds having a 2-(2-pyridyl)ethyl group were synthesized and their oxidation potentials were determined by rotating disk electrode voltammetry. The oxidation potentials were found to be less positive than those of the corresponding compounds having a phenyl group in place of the pyridyl group. The dynamic coordination of the pyridyl group to the heteroatom, which stabilizes the cation radical intermediate, seems to be responsible for facilitating the electron transfer. The magnitude of the intramolecular assistance increases along with an increase in the oxidation potential of the parent compounds. This tendency can be explained in terms of the energy match between the nonbonding p orbital of the pyridyl nitrogen and the HOMO of the parent heteroatom compound.
