Oligocyclic derivatives from the partial bromination of 2-methyl-5-phenyl-1,2,4,3-triazaphosphole

Article abstract of DOI:10.1080/10426509608038807

With less than one mol Br₂ per mol of the 2-methyl-5-phenyl-1,2,4,3-triazaphosphole (1) an equilibrium mixture forms, which contains besides 1 and its dimeric dibromide 3 at least three more components (4, 5, 6), which are intermediate between 1 and 3. In 4, 5 and 6 two, three and four triazaphosphole rings are connected to each other by PN bonds with the phosphorus atoms being in part tervalent, in pan pentavalent. Secondary amines convert compounds 4 and 5 to the amino derivatives 11 and 12 of the same bi-and tricyclic structure. Of the bicyclic dimethylamino derivative 11b a number of reactions are reported which all selectively involve the tervalent phosphorus only: Oxidation by bromine, elemental sulfur, phenyl azide and ethyl diazoacetate, insertion of CS₂, RNCS and RNCO into the exocyclic PN bond and formation of chelate complexes with PdCl₂ and PtCl₂. The same is shown by the reaction of the tricyclic piperidyl derivative 12c with elemental sulfur.

Full text of DOI:10.1080/10426509608038807

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Phosphorus, Sulfur, and Silicon and
the Related Elements
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OLIGOCYCLIC DERIVATIVES FROM
THE PARTIAL BROMINATION OF
2-METHYL-5-PHENYL-1,2,4,3-
TRIAZAPHOSPHOLE
Alfred Schmidpeter a , Helmut Tautz a & Franz Steinmüller a
a Institut für Anorganische Chemie der Universität München ,
Meiserstrasse I, D-80333, München, Germany
Published online: 24 Sep 2006.
To cite this article: Alfred Schmidpeter , Helmut Tautz & Franz Steinmüller (1996)
OLIGOCYCLIC DERIVATIVES FROM THE PARTIAL BROMINATION OF 2-METHYL-5-PHENYL-1,2,4,3-
TRIAZAPHOSPHOLE, Phosphorus, Sulfur, and Silicon and the Related Elements, 118:1, 129-143,
DOI: 10.1080/10426509608038807
To link to this article: http://dx.doi.org/10.1080/10426509608038807
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