A domino Friedel-Crafts/nitro-Michael reaction between 4-substituted indoles and nitroethene is presented. The reaction is catalyzed by BINOL-derived phosphoric acid catalysts, and delivers the corresponding 3,4-ring-fused indoles with very good results in terms of yields and diastereo- and enantioselectivities. The tricyclic benzo[cd]indole products bear a nitro group at the right position to ...

The mixed-function oxidases containing cytochrome P450 are the primary systems that metabolize xenobiotics including drugs and carcinogens and endogenous substrates such as steroids [l-3]. The mixed-function oxidases may be key determinants of the rates of drug metabolism [2] and carcinogen susceptibility [3-S]. A major class of carcinogens to which humans are exposed is the polycyclic aromatic...

The title compound [systematic name: 3-hy-droxy-2-(4-methyl-sulfonyl-2-nitro-benzo-yl)cyclo-hex-2-enone], C14H13NO7S, is the enol form of a benzoyl-cyclo-hexa-nedione herbicide. As a result of this tautomerization, there is intra-molecular O-H⋯O hydrogen bond enclosing an S(6) ring motif. The cyclo-hexene ring has an envelope conformation, with the central CH2 C atom as the flap. Its mean plane...

In the title mol-ecule, C24H23N3O3S2, the benzo-thia-diazole ring system is essentially planar, with an r.m.s. deviation of 0.020 (8) Å. The thio-phene and hy-droxy-substitiuted rings form dihedral angles of 23.43 (9) and 35.45 (9)°, respectively, with the benzo-thia-diazole ring system. An intra-molecular O-H⋯N hydrogen bond is observed. In the crystal, weak C-H⋯O hydrogen bonds and π-π stacki...

3,4-Dihydro-2H,6H-pyrimido[1,2-c][1,3]benzothiazin-6-imine (PD 404182) is an antiretroviral agent with submicromolar inhibitory activity against human immunodeficiency virus-1 (HIV-1) and HIV-2 infection. In the current study, the structure-activity relationships of accessory groups at the 3- and 9-positions of pyrimido[1,2-c][1,3]benzothiazin-6-imine were investigated for the development of mo...

A chiral, crown-ether-functionalized bisurea gelator forms supramolecular gels in ionic liquids. The resulting ionogels show a remarkably high thermal stability with gel-sol transition temperatures (T(gs)) reaching more than 100 °C. The mechanical strength of these ionogels is surprisingly high and even comparable to that of cross-linked protein fibres. Furthermore, the ionogels exhibit rapid s...

Cohesive energy densities (C(w,MLA)/J cm(-3)) for ion-pair complexes (MLA: M(+) = Li(+) to Cs+; w: water) with six crown ethers (L), such as 18-crown-6 ether (18C6), benzo-18C6, and dibenzo-24-crown-8 one, and A(-) = picrate were calculated at 298 K by a procedure that uses either (i) an equation rearranged from that underlying log K(D,MLA)-vs.-log K(D,L) plots or (ii) intercepts of their plots...

We report a synthesis of 3-bromo-9-N′-(N,N-dimethylformamidino)benzanthrone in good yield by condensation reaction 3-bromo-9-aminobenzanthrone with dimethylformamide the presence phosphorous oxychloride. The structure synthesized amidine was characterized FTIR-ATR, NMR experiments, and elemental analysis. title compound analyzed UV-Vis fluorescence spectroscopy various organic solvents.