Diastereoselective alkylation of iminomethylenephosphinates possessing an asymmetric center at the phosphorus atom
摘要:
Diastereoselective synthesis of alpha-aminophosphinates was achieved by alkylation of imines with a 1,1-diethoxyethylphosphinyl group. These products were readily converted into alpha-amino-H-phosphinates. (c) 2006 Elsevier Ltd. All rights reserved.
Diastereoselective alkylation of iminomethylenephosphinates possessing an asymmetric center at the phosphorus atom
摘要:
Diastereoselective synthesis of alpha-aminophosphinates was achieved by alkylation of imines with a 1,1-diethoxyethylphosphinyl group. These products were readily converted into alpha-amino-H-phosphinates. (c) 2006 Elsevier Ltd. All rights reserved.
Both enantiomers of 1,1-diethoxyethyl(aminomethyl)phosphinates were prepared through chromatographic separation of a diastereomeric mixture derived from (S)-phenylethylamine and 1,1-diethoxyethyl-H-phosphinate. The individual enantiomer was transformed into α-substituted α-amino-H-phosphinate with high enantiomeric purity by a highly diastereoselective alkylation at the α-carbon on the basis of our