Highly enantioselective construction of the key azetidin-2-ones for the synthesisof carbapenem antibiotics via intramolecular C–H insertion reactions ofa-methoxycarbonyl-a-diazoacetamides catalysed by chiral dirhodium(II)carboxylates
Highly enantioselective construction of the key azetidin-2-ones for the synthesisof carbapenem antibiotics via intramolecular C–H insertion reactions ofa-methoxycarbonyl-a-diazoacetamides catalysed by chiral dirhodium(II)carboxylates