A. Petz et al., Facile, high-yielding synthesis of steroidal crown ethers via palladium-catalyzed carbonylation reaction, SYN COMMUN, 31(3), 2001, pp. 335-341
17-Carboxamido-androstanes possessing crown ether moieties attached to the
amide functionality were synthesized from the corresponding 17-iodo-androst
a-16-enes in palladium-catalyzed homogeneous aminocarbonylation reaction.