Albert Eschenmoser
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| Albert Eschenmoser | |
|---|---|
| Name | Albert Eschenmoser |
| Caption | Eschenmoser in 2006 |
| Birth date | 5 August 1925 |
| Birth place | Erstfeld, Uri, Switzerland |
| Nationality | Swiss |
| Fields | Organic chemistry |
| Workplaces | ETH Zurich, The Scripps Research Institute |
| Alma mater | ETH Zurich |
| Doctoral advisor | Leopold Ružička |
| Known for | Eschenmoser fragmentation, Vitamin B12 total synthesis, Eschenmoser's salt, TNA |
| Awards | Marcel Benoist Prize (1972), Wolf Prize in Chemistry (1986), Paul Karrer Gold Medal (1990), Othmer Gold Medal (1999), Tetrahedron Prize (2001) |
Albert Eschenmoser. A preeminent Swiss organic chemist, he is celebrated for his profound contributions to synthetic methodology and the chemical origins of life. His illustrious career, primarily at ETH Zurich, is marked by the landmark total synthesis of vitamin B<sub>12</sub> in collaboration with Robert Burns Woodward and the discovery of the eponymous fragmentation reaction. His later pioneering work on alternative nucleic acid structures has deeply influenced the field of prebiotic chemistry and the study of genetic systems.
Early life and education
Born in Erstfeld in the Canton of Uri, he developed an early interest in the natural sciences. He pursued his higher education at the renowned ETH Zurich, where he studied chemistry under the guidance of distinguished professors. He completed his Diploma in 1949 and earned his Dr. sc. nat. degree in 1951 under the supervision of Nobel laureate Leopold Ružička, a pioneer in terpene chemistry. His doctoral work on triterpenes laid a formidable foundation for his future research in complex molecule synthesis.
Career and research
Following his doctorate, he began his independent academic career at ETH Zurich, rising through the ranks to become a full professor in 1960. His research group became a global epicenter for creative synthetic organic chemistry, tackling some of the most challenging problems in the field. His investigations spanned from the synthesis of complex natural products to fundamental studies on reaction mechanisms. In 1996, he assumed a professorship at The Scripps Research Institute in La Jolla, California, where he continued his exploratory work on the chemical etiology of nucleic acid structure.
Eschenmoser fragmentation
A major contribution to synthetic methodology is the Eschenmoser fragmentation, a reaction he discovered in the 1960s. This process involves the base-induced cleavage of α,β-epoxy ketones or related systems, leading to the formation of acetylenic carbonyl compounds. The reaction provides a powerful and stereocontrolled route for the elongation of carbon chains and the installation of crucial functional groups. It has been extensively applied in the total synthesis of numerous complex natural products, including various macrolide antibiotics and terpenoid targets.
Vitamin B12 total synthesis
His most celebrated achievement is the monumental total synthesis of vitamin B<sub>12</sub>, a collaboration over a decade with Robert Burns Woodward of Harvard University. This project, involving nearly 100 students and postdoctoral fellows from both laboratories, was a tour de force that confronted extraordinary structural complexity, including a intricate corrin macrocycle and multiple chiral centers. Completed in 1972, the effort not only achieved the synthesis but also led to the development of novel synthetic strategies and a deeper understanding of pericyclic reactions, profoundly shaping modern organic synthesis.
Awards and honors
His groundbreaking work has been recognized with numerous prestigious international awards. These include the Marcel Benoist Prize in 1972, often considered the "Swiss Nobel Prize." He was a co-recipient of the Wolf Prize in Chemistry in 1986. Other significant honors are the Paul Karrer Gold Medal (1990), the Othmer Gold Medal (1999), and the Tetrahedron Prize (2001). He is a member of several esteemed academies, including the United States National Academy of Sciences, the American Academy of Arts and Sciences, and the Royal Society.
Personal life
He is known for his deep intellectual curiosity, rigorous scientific standards, and inspiring mentorship. His move to The Scripps Research Institute allowed him to focus on fundamental questions at the interface of chemistry and biology. His lectures and writings are renowned for their clarity and philosophical depth, influencing generations of chemists. He maintains strong connections with the scientific communities in both Switzerland and the United States.
Category:1925 births Category:Living people Category:Swiss chemists Category:ETH Zurich alumni Category:ETH Zurich faculty Category:Wolf Prize in Chemistry laureates