556812-44-3Relevant academic research and scientific papers
ESTER COMPOUND
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Paragraph 0332; 0336-0339; 0349-0352, (2022/04/06)
This ester compound is represented by formula (1) [wherein R1 to R24 are each independently a hydrogen atom, a halogen atom, a hydrocarbon group, or a heteroatom-containing hydrocarbon group; R1 to R10, R23, and R24 may be bonded to each other to form a ring, and adjacent substituents may be directly bonded to form a multiple bond; R11 to R24 may be bonded to each other to form a ring, and adjacent substituents may be bonded to each other to form a multiple bond; at least two, as a pair, of R1 to R24 are bonded to each other to form a ring structure; n2 to n5 each independently indicate an integer of 0-2; n1 and n6 each independently indicate 0 or 1; and L1 and L2 are each independently a hydrocarbon group or a heteroatom-containing hydrocarbon group].
Cobalt- and Nickel-Catalyzed Carboxylation of Alkenyl and Sterically Hindered Aryl Triflates Utilizing CO2
Nogi, Keisuke,Fujihara, Tetsuaki,Terao, Jun,Tsuji, Yasushi
, p. 11618 - 11623 (2015/12/01)
A highly efficient cobalt-catalyzed reductive carboxylation reaction of alkenyl trifluoromethanesulfonates (triflates) has been developed. By employing Mn powder as a reducing reagent under 1 atm pressure of CO2 at room temperature, diverse alkenyl triflates can be converted to the corresponding α,β-unsaturated carboxylic acids. Moreover, the carboxylation of sterically hindered aryl triflates proceeds smoothly in the presence of a nickel or cobalt catalyst.
Reductive cyclization of bromoenynamides with alcohols as hydride source: Synthesis and reactions of 2-amidodienes
Greenaway, Rebecca L.,Campbell, Craig D.,Chapman, Helen A.,Anderson, Edward A.
supporting information, p. 3187 - 3194 (2013/01/15)
Under basic conditions in alcoholic solvents, bromoenynamides undergo palladium-catalyzed cyclization to cyclic 2-amidodienes in good to excellent yields. This process represents the first use of an alcohol as a hydride source in an alkyne carbopalladation/termination sequence, with the site selectivity of the reduction showing a strong dependence on the tethering ring size (5-8), and the nature of the alcohol and base. Reaction of the dienes with a range of dienophiles (including alkenes, alkynes and arynes) under various conditions gives bi- and tricyclic azacycles, which can be further oxidized to the aromatic azacycles. Copyright
