Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/9929
Title: Synthesis of novel C-2-symmetric and enantiomerically pure bisbenzoxazoles and bisbenzothiazoles derived from L- and D-tartaric acids
Authors: Jiao, P
Xu, JX
Zhang, QH
Choi, MCK
Chan, ASC
Issue Date: 2001
Publisher: Pergamon Press
Source: Tetrahedron : asymmetry, 2001, v. 12, no. 22, p. 3081-3088 How to cite?
Journal: Tetrahedron : asymmetry 
Abstract: Five pairs of novel G-symmetric and enantiomerically pure bisbenzoxazoles and a pair of bisbenzothiazoles derived from L- and D-tartaric acids have been synthesized from L- and D-2,3-O-isopropylidenetartaric dichlorides and o-aminophenol derivatives or o-amino thio phenol, respectively, in two- or one-step reactions. The mechanism for the formation of bisbenzoxazoles and bisbenzothiazoles was suggested. The UV and H-1 NMR spectra showed that no coordination between the bisbenzoheterazoles and Cu(I) or Ni(II) cations occurred due to the lack of a sufficiently basic nitrogen donor atom in the benzoheterazole moiety.
URI: http://hdl.handle.net/10397/9929
ISSN: 0957-4166
EISSN: 1362-511X
DOI: 10.1016/S0957-4166(01)00547-X
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