ISSN:
0009-2940
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Low Coordinated Phosphorus Compounds, 27. Synthesis and Reactions of EthynylphosphaalkenesReactions of the alkyne grignards 2a, b with P-chlorophosphaalkenes 1a, b yield the ethynylphosphaalkenes 5a - d in high yields. 5a, b, d undergo [2 + 2]-cycloaddition forming the 1,3-diphosphetanes 7a, b, d. The structures of 7 are confirmed by NMR spectroscopy and, in part, by X-ray structure determination. With 2,3-dimethyl-1,3-butadiene 5a - d form the 1,2,3,6-tetra-hydrophosphinines 8a - d via [2 + 4]-cycloaddition.
Notes:
Die Umsetzung der P-Chlorphosphaalkene 1a, b mit den Grignard-Alkinen 2a, b liefert die Ethinylphosphaalkene 5a - d in hoher Ausbeute. Durch [2 + 2]-Cycloaddition entstehen daraus 1,3-Diphosphetane 7a, b, d, deren Struktur mittels NMR-Spektroskopie und Röntgenbeugung ermittelt wurde. Mit 2,3-Dimethyl-1,3-butadien erfolgt [2 + 4]-Cycloaddition zu den 1,2,3,6-Tetrahydrophosphininen 8.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19841170813
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