Structures and transistor properties of extended and unsymmetrical birhodanines
作者:Yuji Sumimoto、Kodai Iijima、Dongho Yoo、Tadashi Kawamoto、Yann Le Gal、Dominique Lorcy、Takehiko Mori
DOI:10.1039/d0ce01133a
日期:——
inserted into the central CC part. We have also prepared N-phenyl and unsymmetrically N-substituted derivatives, including an unsubstituted N-H part. These compounds show n-channel transistor properties. In contrast to the herringbone structure of the parent compounds, the phenylene and phenyl compounds have stacking structures. The phenylene substitution decreases the acceptor ability, whereas the
Versatile syntheses of 5-imino or 5-acylidene substituted 1,3-thiazolidin-4-one derivatives are reported from α-dioxothiazole systems and phosphoranes via Wittig reactions. Antimicrobial and antioxidant activity of the compounds were evaluated. 5-Carbonylmethylene substituted 2-thioxo-1,3-thiazolidines have better antioxidant properties than the 5-arylimino substituted ones. The % inhibition value
Enantioselective Synthesis of Spirorhodanine-Pyran Derivatives via Organocatalytic [3 + 3] Annulation Reactions between Pyrazolones and Rhodanine-Derived Ketoesters
A series of novel biselectrophilic β,γ-unsaturatedα-ketoesters were designed and synthesized from rhodanine. Under the catalysis of chiral squaramides, the enantioselective [3 + 3] annulation reaction of these novel ketoesters with pyrazolones was developed. This reaction offers an efficient method for the synthesis of chiral 2'-thioxo-5,6-dihydrospiro[pyrano[2,3-c]pyrazole-4,5'-thiazolidin]-4'-ones
Abstract Twenty new samples of hydrazone functionalized thioparabanic acid and rhodanine analogues were prepared by reacting a mixture of acyl methylene substituted rhodanine and hydantoin compounds with hydrazine and acyl hydrazine derivatives in good yields (53–89%). The cytotoxic effect of newly synthesized compounds 3a–g, 4a–m was evaluated on the human colon cancer cell line (DLD-1) and human