-Adsorptive-type organoclays, where hydrocarbons adsorb directly to the siloxane surfaces, were studied to find new organic cations and to determine the parameters that produce effective sorbents. Organoclays were prepared from hectorite by cation exchange with small, aromatic organic cation salt solutions. Trimethylphenylammonium (TMPA) chloride was obtained and iodide salts of commerciallyuna...

2,3,4,7-Tetrahydro-1H -inden-2-ol (1) has been synthesised by Birch reduction of indan-2-ol. A single-crystal X-ray structur analysis of 1 shows the compound to exist as hydrogen-bonded polymers along the c-axis due to the presence of a series of hydrogen bonds between hydroxo functions. The ferrocene ester derivatives, ferrocene carboxylic acid 2,3,4,7-tetrahydro-1H -inden-2-yl este (2) and fe...

In the title compound, C(17)H(14)O(2), the indan-1-one system is almost planar (r.m.s. deviation = 0.007 Å) and the benzene ring is twisted out of its plane by 8.15 (6)°. The conformation about the C=C double bond [1.348 (2) Å] is E. Helical supra-molecular chains along [010] feature in the crystal packing; these are sustained by C-H⋯O hydrogen bonds and π-π inter-actions between translationall...

Both compounds were prepared via a common intermediate. The key features included the direct synthesis of the indan skeleton and the radical addition to a quinone.

In the mol-ecule of the title compound, C(14)H(17)NO(2), the dihedral angle formed by the mean planes through the indan ring system and the amino-pentenone fragment is 83.26 (13)°. An intra-molecular N-H⋯O hydrogen bond is observed. In the crystal, mol-ecules are linked into one-dimensional chains extending along the [010] direction via O-H⋯O and C-H⋯O hydrogen bonds.

Kinetic resolution of racemic C-3 substituted pyrrolidine-2,5-diones has been achieved for the first time using highly efficient oxazaborolidine catalysts derived from cis-1-amino-indan-2-ol.