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Abstract
A method of synthesis of pseudo-γ-aminobutanoyl peptides and other phosphinic analogs of γ-aminobutyric acid from hypophosphites is suggested. Silyl phosphonites formed by in situ addition of bis-(trimethylsilyl) hypophosphite to the corresponding α-substituted acrylates, styrene, or vinyl phosphonate used as unsaturated components in the synthesis react in situ with N-(ω-bromoalkyl)phthalimides by an Arbuzov reaction scheme, affording ω-(phthalimido)alkylphosphinic acids possessing β-substituted β-(alkoxycarbonyl)ethyl, β-phenylethyl, or β-(diethoxyphosphinoyl)ethyl substituents. Acid hydrolysis of these reaction products gives the target aminophosphinic acids: phosphinic analogs of γ-aminobutyric acid.
Published Version
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