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Cyclic tellurium oxychlorides

In the case of 3-hydroxyalkynes the OH group promotes anti addition. Depending on the steric hindrance at the propargylic position, four- or five-membered cyclic tellurium oxychlorides are formed. ... [Pg.85]

Reduction of cyclic tellurium oxychloride 22 with stoichiometric amounts of sodium borohydride or excess sodium bisulfite yields the telluride 56, whereas treatment with a great excess of sodium borohydride quantitatively leads to di-/>-methoxyphenyl ditelluride and alkyne 57 (Scheme 6) <1999OM803>. [Pg.862]

See other pages where Cyclic tellurium oxychlorides is mentioned: [Pg.856]    [Pg.866]    [Pg.856]    [Pg.866]   
See also in sourсe #XX -- [ Pg.85 ]

See also in sourсe #XX -- [ Pg.85 ]



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Oxychloride

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