83200-26-4Relevant academic research and scientific papers
Photoenzymatic Synthesis of α-Tertiary Amines by Engineered Flavin-Dependent "ene"-Reductases
Gao, Xin,Turek-Herman, Joshua R.,Choi, Young Joo,Cohen, Ryan D.,Hyster, Todd K.
supporting information, p. 19643 - 19647 (2021/12/01)
α-Tertiary amines are a common motif in pharmaceutically important molecules but are challenging to prepare using asymmetric catalysis. Here, we demonstrate engineered flavin-dependent ‘ene'-reductases (EREDs) can catalyze radical additions into oximes to prepare this motif. Two different EREDs were evolved into competent catalysts for this transformation with high levels of stereoselectivity. Mechanistic studies indicate that the oxime contributes to the enzyme templated charge-transfer complex formed between the substrate and cofactor. These products can be further derivatized to prepare a variety of motifs, highlighting the versatility of ERED photoenzymatic catalysis for organic synthesis.
Remarkable effects of additives to facilitate aza-Mannich type reaction: A rapid access to β-amino ketone O-alkyl oximes
Shimizu, Makoto,Tanaka, Mitsue,Itoh, Tomohiro,Hachiya, Iwao
, p. 1687 - 1690 (2008/02/05)
Aza-Mannich-type reaction proceeded between imines and the aza-enolates formed from α-iodomethyl ketone O-alkyl oximes with titanium tetraiodide to give β-amino ketone O-alkyl oximes in good to excellent yields. Remarkable effects of added silica gel or m
