BASF: Innovations in chiral intermediates
Dehydrogenase technology for high-purity products
In addition, BASF is expanding its portfolio with two new, multi-faceted chiral amines: (R,R)- and (S,S)-Bis(1-phenylethyl)amine. These process chemicals can be used for the asymmetric synthesis of non natural amino acids and as starting materials for chiral bases (i.e., bases for the asymmetric deprotonation according to Simpkins).
Under the ChiPros® brand, BASF is now supplying a range of chiral amines, alcohols and acids. More than ten years ago the company produced a chiral 1-phenylehtylamine based on a new bio-catalytic process for the first time. Since then, the "ChiPros Building Block Set" has been enlarged continually. The life science industry, its principal customer, uses these products in complex processes to make new medicines and crop protection agents.
Enzymes play a major role in producing these coveted substances. Enzymatic processes make more effective use of starting materials, produce less waste and require less energy. New catalysts must be found constantly for pilot processes converted to industrial-scale production. Our search strategy is based on evolution: Changes in enzymes are made in the laboratory on the basis of mutation and selection. Darwin would find his thinking confirmed, with the difference that we accomplish needed change in days rather than millions of years. Thousands of enzyme variations are developed and screened with the aid of computers. Automatic systems test more than 50,000 substances daily. The most promising candidates are mutated and selected until the optimum enzyme has been achieved.
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