ISSN:
0044-2313
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Reactions of 1,1,3,3-Tetrakis(dimethylamino)-1λ5, 3λ5-diphosphete with Monosubstituted Acetylenes and Acetylene. 1λ5, 3λ5-Diphosphabenzenes. IVThe monosubstituted acetylenes H—C≡C—COOCH3 and H—C≡C—CF3 react with 1,1,3,3-tetrakis(dimethylamino)-1λ5,3λ5-diphosphete 1 to give 1,1,3,3-tetrakis (dimethylamino)- 4-methoxycarboxylato-1λ5,3λ5-diphosphorine 3, and -4-trifluoromethyl-1λ5,3λ5-diphosphorine 5, respectively. In contrast, phenylacetylene and 1 form two isomers, namely 1,1,3,3- tetrakis(dimethyl-amino)-4-phenyl-1λ5,3λ5-diphosphorine 4a und -5-phenyl-1λ5,3λ5-diphosphorine 4b. The reaction between acetylene and 1 yields the 1,1,3,3-tetrakis(dimethylamino)-1λ5,3λ5-diphosphorine 6, unsubstituted at the carbon atoms of the ring. Various mechanisms are discussed for the formation of the compounds 3, 4a, 4b, 5 and 6. All new compounds are characterized by their n.m.r., mass, and i.r. spectra.
Notes:
Die monosubstituierten Acetylene H—C≡C—COOCH3 und HC≡C—CF3 reagieren mit 1,1,3,3-Tetrakis(dimethylamino)-1λ5,3λ5-diphosphet 1 zu 1, 1, 3, 3-Tetrakis(dimethylamino)- 4-methoxycarboxylato-1λ5,3λ5-diphosphorin 3 bzw. -4-trifluormethyl-1λ5,3λ5-diphosphorin 5. Im Gegensatz dazu bildet Phenylacetylen mit 1 zwei Isomere, nämlich 1,1,3,3- Tetrakis(dimethylamino)-4-phenyl-1λ5,3λ5-diphosphorin 4a und -5-phenyl-1λ5,3λ5-diphosphorin 4b. Acetylen und 1 reagieren zu dem an den Kohlenstoffatomen des Rings unsubstituierten 1,1,3,3-Tetrakis(dimethylamino)-1λ5,3λ5-diphosphorin 6. Für die Bildung der Verbindungen 3, 4a, 4b, 5 und 6 werden verschiedene Mechanismen diskutiert. Alle neuen Verbindungen sind durch ihre NMR-, Massen- und IR-Spektren charakterisiert.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19905880121
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