A novel class of beta-lactam derivatives of 1-aminophosphonates was synthesized by Staudinger [2+2] cycloaddition reaction of ketenes with imines derived from 1-aminophosphonates. Treatment of aromatic aldehydes with ammonia and diethyl phosphite followed by a reaction with ketenes, which are generated from the appropriate acid chloride and a tertiary amine, gave a novel class of beta-lactam derivatives of 1-aminophosphonates. The major or, in some cases, sole product of the cycloaddition is the cis-beta-lactam.
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Boston Univ, Dept Biomed Engn, Boston, MA 02215 USABoston Univ, Dept Biomed Engn, Boston, MA 02215 USA
Balijepalli, Anant S.
McNeely, James H.
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Boston Univ, Dept Chem, 590 Commonwealth Ave, Boston, MA 02215 USABoston Univ, Dept Biomed Engn, Boston, MA 02215 USA
McNeely, James H.
Hamoud, Aladin
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Boston Univ, Dept Chem, 590 Commonwealth Ave, Boston, MA 02215 USABoston Univ, Dept Biomed Engn, Boston, MA 02215 USA
Hamoud, Aladin
Grinstaff, Mark W.
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Boston Univ, Dept Biomed Engn, Boston, MA 02215 USA
Boston Univ, Dept Chem, 590 Commonwealth Ave, Boston, MA 02215 USABoston Univ, Dept Biomed Engn, Boston, MA 02215 USA