Substituted 2-aminoalk-3-enoic acid derivative of formula I ##STR1## wherein R.sub.1 is an aliphatic hydrocarbon radical that is substituted by optionally acylated or aliphatically or araliphatically etherified hydroxy, by halogen, by optionally acylated and/or aliphatically substituted amino or by an aza-, diaza-, azoxa- or oxa-cycloaliphatic radical, or is an oxacycloaliphatic hydrocarbon radical bonded via a carbon atom, or is an optionally aliphatically N-substituted or N-acylated azacycloaliphatic hydrocarbon radical, and R.sub.2 is free or esterified carboxy, and their salts exhibit NMDA-antagonistic properties and are useful as active ingredients of anticonvulsive medicaments.
The regioselective hydroformylation of allyl acetate catalysed by cationic and zwitterionic rhodium complexes
作者:Howard Alper、Jian-Quiang Zhou
DOI:10.1039/c39930000316
日期:——
Cationic and zwitterionicrhodiumcomplexes, with added 1,4-bis(diphenylphosphino)butane (dppb), are efficient catalysts for the highly regioselective hydroformylation of allyl acetate and related esters to yield the linear aldehyde (up to 95%) under mild conditions.
Substituted 2-aminoalk-3-enoic acid derivative of formula I ##STR1## wherein R.sub.1 is an aliphatic hydrocarbon radical that is substituted by hydroxy, and R.sub.2 is free or esterified carboxy, and their salts exhibit NMDA-antagonistic properties and are useful as active ingredients of anticonvulsive medicaments.