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Elsevier, Tetrahedron, 10(57), p. 1935-1938

DOI: 10.1016/s0040-4020(01)00017-5

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Synthesis of a symmetric tetrakis-epoxide from a 3,4- d -mannitol bridged o , o -cyclophane

This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

The coupling reaction of 1,2:5,6-di-O-isopropylidene-d-mannitol with α,α′-dibromoxylene has been reinvestigated. We found reaction conditions leading to the 3,4-d-mannitol bridged o,o-cyclophane 3, free of the 3,4-O-o-xylylene protected mannitol 2. Compound 3 could be converted in 57% yield into tetrakis-epoxide 4.