Dibenzyl and diallyl 2,6-bisiminopyridinezinc(II) complexes: selective alkyl migration to the pyridine ring leads to remarkably stable dihydropyridinates.

نویسندگان

  • John J Sandoval
  • Pilar Palma
  • Eleuterio Álvarez
  • Antonio Rodríguez-Delgado
  • Juan Cámpora
چکیده

Diorganozinc compounds (ZnR2) with R = CH2Ph or CH2CH=CH2 react with 2,6-bisiminopyridines ((iPr)BIP) to afford thermally stable dihydropyridinate(-1) complexes, and do not react if R = CH2SiMe3 or CH2CMe2Ph. NMR studies reveal that dibenzylzinc binds (iPr)BIP at -80 °C, yielding the unstable complex [Zn(CH2Ph)2((iPr)BIP)]. Above -20 °C, this undergoes selective alkyl migration to the remote 4 position of the central pyridine ring.

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عنوان ژورنال:
  • Chemical communications

دوره 49 60  شماره 

صفحات  -

تاریخ انتشار 2013