SYNTHESIS OF PYRROLIZIDINE BASES BY HIGHLY DIASTEREOSELECTIVE AND REGIOSELECTIVE CATALYTIC CARBON-HYDROGEN INSERTION REACTIONS OF CHIRAL PYRROLIDINEDIAZOACETAMIDES
Mp. Doyle et Av. Kalinin, SYNTHESIS OF PYRROLIZIDINE BASES BY HIGHLY DIASTEREOSELECTIVE AND REGIOSELECTIVE CATALYTIC CARBON-HYDROGEN INSERTION REACTIONS OF CHIRAL PYRROLIDINEDIAZOACETAMIDES, Tetrahedron letters, 37(9), 1996, pp. 1371-1374
Pyrrolizidines, (1S,8S)-1-hydroxypyrrolizidin-3-one and (-)-heliotrida
ne, have been prepared in high yield from diazoacetamides of 2-substit
uted-pyrrolidines by carbon-hydrogen insertion catalyzed by dirhodium(
II) tetrakis[methyl 1-acylimidazolidin-2-one-4(S)-carboxylates].