Dorothee Bien

Title: The Innovations of Dorothee Bien

Introduction

Dorothee Bien is a notable inventor based in Munich, Germany. She has made significant contributions to the field of chemistry, particularly in the preparation of aminoanthraquinones. Her innovative approach has led to advancements in the synthesis of these important compounds.

Latest Patents

Dorothee Bien holds a patent for the "Preparation of aminoanthraquinones from nitroanthraquinones." This patent describes a method involving the reaction of a nitroanthraquinone with ammonia in a solvent at elevated temperatures to produce the corresponding aminoanthraquinone. The process is enhanced by conducting the reaction in the presence of an ammonium halide. Notably, the nitroanthraquinone used is an α-nitroanthraquinone, and the ammonium halide can include ammonium chloride or ammonium bromide. The solvent options include water, nitrobenzene, a glycol, an acid amide, and sulfolane. This patent showcases her innovative thinking and expertise in chemical processes.

Career Highlights

Dorothee Bien is associated with Bayer Aktiengesellschaft, a leading global company in the pharmaceutical and life sciences sector. Her work at Bayer has allowed her to contribute to various projects and research initiatives, further establishing her reputation as a skilled inventor in her field.

Collaborations

Throughout her career, Dorothee has collaborated with notable colleagues, including Karl-Julius Reubke and Hans-Samuel Bien, who is now deceased. These collaborations have enriched her work and contributed to the advancement of their shared research interests.

Conclusion

Dorothee Bien's contributions to the field of chemistry, particularly through her patent on aminoanthraquinones, highlight her innovative spirit and dedication to scientific advancement. Her work continues to influence the industry and inspire future generations of inventors.