The present invention relates to pyruvate : ω-amino acid transaminases isolated from a Pseudomonas species. The transaminases act on long chain amino acids and are capable of accepting substrates comprising 8 to 12 carbon atoms. The enzymes are suitable as biocatalysts for the manufacture of nylon.
Pt-Sn/γ-Al2O3-Catalyzed Highly Efficient Direct Synthesis of Secondary and Tertiary Amines and Imines
syntheses of secondary and tertiaryamines by highlyefficientdirect N‐alkylation of primary and secondaryamines with alcohols or by deaminative self‐coupling of primary amines have been successfully realized by means of a heterogeneous bimetallic Pt–Sn/γ‐Al2O3 catalyst (0.5 wt % Pt, Pt/Sn molar ratio=1:3) through a borrowing‐hydrogen strategy. In the presence of oxygen, imines were also efficiently prepared