Synthesis and characterization of some α-naphthyl selenium/tellurium derivatives: X-ray crystal structure of benzyl-1-naphthyl selenide and diphenylmethyl-1-naphthyl selenide
作者:K.K. Bhasin、Neelam Singh、Rishu Dhiman、Ganga Ram、Shivani、S.K. Mehta、R.J. Butcher
DOI:10.1016/j.jorganchem.2005.09.033
日期:2006.2
A large number of alpha-naphthyl selenium and tellurium compounds (1-14) have been prepared through two different methods. The first method involves the alkylation of sodium 1-naphthylselenolate/tellurolate, generated in situ using hydrazine hydrate as reducing agent while the second method involves the reaction of in situ generated alpha-naphthylseleno/telluromagnesium bromide with an appropriate electrophile. The synthesized alkyl- l- naphthyl selenides/tellurides and some alpha,omega-bis( l -naphthylseleno)alkanes have been characterized with the help of elemental analysis and using various spectroscopic techniques viz., NMR (H-1, C-13, Se-77 and Te-125), IR, UV/vis spectroscopy and mass spectrometry (only in few representative cases). Interpretation of H-1, C-13 NMR spectra and assignment of individual resonances for tris(l-naphthylseleno)methane have been done with the help of [H-1-H-1] and [H-1-C-13] correlation spectroscopy (COSY). X-ray crystallographic results and molecular geometry of benzyl-1-naphthyl selenide, 2 and diphenylmethyl-1-naphthyl selenide, 3 have also been illustrated. (c) 2005 Elsevier B.V. All rights reserved.