The rate constants of the Diels-Alder reaction 9,10-dimethylanthracene with tetracyanoethylene, 4-phenyl-1,2,4-triazoline-3,5-dione, maleic anhydride, and N-phenylmaleimide in solution have been determined. It was found that tetracyanoethylene 4-phenyl-1,2,4-triazoline-3,5-dione can react instantly 9,10-dimethylanthracene, which is a representative toxic polycyclic aromatic hydrocarbons. kineti...

Cyclic alcohols Cyclohexane-1.2-dione hydrolase Thiamine diphosphate Flavoenzyme Alicyclic alcohols are naturally occurring compounds wh ich can be degraded by microorgan isms via cleavage of the ring CC bond. DenitrifyingAzoarcus sp. strain 22Lin grows on cyclohexane-l .2-diol which serves as electron donor and carbon source. The diol is converted to cyclohexane-l.2-dione followed by hydrolysi...

In the mol-ecular structure of the title compound, C(15)H(13)ClNO(2) (+)·CF(3)SO(3) (-), the meth-oxy groups are nearly coplanar with the acridine ring system, making dihedral angles of 0.4 (2) and 5.1 (2)°. Multidirectional π-π contacts between acridine units are observed in the crystal structure. N-H⋯O and C-H⋯O hydrogen bonds link cations and anions, forming a layer structure.

(1)H-NMR and (13)C-NMR assignments of 12-oleanene-3,11-dione (compound 1) were completely described for the first time through conventional 1D NMR and 2D shift-correlated NMR experiments using (1)H-(1)HCOSY, HMQC, HMBC techniques. Based on its NMR data, the assignments of 28-hydroxyolean-12-ene-3,11-dione (compound 2) were partially revised.