The azeotrope disappeared when the formic acid-water mixtureswere treated by membrane distillation. Membrane distillation were used forseparation of formic acid
The complex K<sub>3</sub>H<sub>4</sub>GeW<sub>9</sub>V<sub>3</sub>O<sub>40</sub>·8H<sub>2</sub>O crystallized in a monocliinie system with space group P2,
a new triterpene compound was isolated from the stems and leaves of Panax ginseng C. A. Meyer and established as 3β, 6α, 12β-trihydroxy-dammar-20(21), 24-die
A precursor 9 of isosarcophytol-A(1)was prepared from(■)-farnesol(3)through 6 steps.Isosarcophytol-A(1),a cembrane-type diterpenoid,was first isolated fromustr
By the reaction of bidentate ligand 1,1’-bis(diphenylphosphino)-ferrocene (dppf) with MoCl<sub>4</sub>(CH<sub>3</sub>CN)<sub>2</sub>, a novel bonding type complex (Mo