Pincer ligands based on alpha-amino acids: I. Synthesis of polydentate ligands from pyrrole-2,5-dicarbaldehydeстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:New chiral pincer ligands having CH=N moieties were synthesized by condensation of 1H-pyrrole-2,5-dicarbaldehyde with L-histidine methyl esters. Their reduction under mild conditions (NaBH4, -30 degrees C) gave the corresponding amine ligands in high yields. An improved procedure for the preparation of 1H-pyrrole-2,5-dicarbaldehyde was proposed.