The present invention relates to a novel process for converting the unwanted S enantiomer form to its useful raceme with respect to a 4-aminoindane derivative and to novel intermediates of said process.

The present invention relates to a novel process for converting the unwanted S enantiomer form to its useful raceme with respect to a 4-aminoindane derivative and to novel intermediates of said process.

The present invention relates to a novel process for converting the unwanted S enantiomer form to its useful raceme with respect to a 4-aminoindane derivative and to novel intermediates of said process.

Methods and intermediates for synthesizing triethylenetetramine and salts thereof, as well as novel triethylenetetramine salts and their crystal structure, and triethylenetetramine salts of high purity.

Methods and intermediates for synthesizing triethylenetetramine and salts thereof, as well as novel triethylenetetramine salts and their crystal structure, and triethylenetetramine salts of high purity.

Methods and intermediates for synthesizing triethylenetetramine and salts thereof, as well as novel triethylenetetramine salts and their crystal structure, and triethylenetetramine salts of high purity.

Provided herein are cinchonium betaine catalysts and methods of promoting asymmetric imine isomerization reactions using the same.

Provided herein are cinchonium betaine catalysts and methods of promoting asymmetric imine isomerization reactions using the same.

Provided herein are cinchonium betaine catalysts and methods of promoting asymmetric imine isomerization reactions using the same.

Provided herein are cinchonium betaine catalysts and methods of promoting asymmetric imine isomerization reactions using the same.