Willi Lange

Title: Willi Lange: Innovator in Dihydropyridine Synthesis

Introduction

Willi Lange is a notable inventor based in Wuppertal, Germany. He has made significant contributions to the field of chemistry, particularly in the synthesis of unsymmetrical dihydropyridines. His innovative approach has led to advancements in the preparation of important chemical compounds.

Latest Patents

Willi Lange holds a patent for a process for the preparation of unsymmetrical dihydropyridines. This patent describes the preparation of nitrenedipine through the reaction of an ylidene compound with an enamine compound. The process is enhanced by the presence of a catalytic amount of diisopropylamine acetate or dimethylbenzylamine acetate. This method results in a high yield of the desired product while minimizing symmetrical by-products.

Career Highlights

Willi Lange is associated with Bayer Aktiengesellschaft, a leading global company in the pharmaceutical and life sciences sector. His work at Bayer has allowed him to focus on innovative chemical processes that have practical applications in various industries.

Collaborations

Throughout his career, Lange has collaborated with esteemed colleagues such as Paul Naab and Werner Teller. These partnerships have fostered a collaborative environment that encourages the exchange of ideas and advancements in their respective fields.

Conclusion

Willi Lange's contributions to the field of chemistry, particularly through his patent on dihydropyridine synthesis, highlight his innovative spirit and dedication to advancing chemical processes. His work continues to influence the industry and inspire future innovations.