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Phosphorus heptasulfide

This reagent appears quite frequently in the older literature it was used by Victor Meyer in his classic synthesis of thiophene from disodium succinate. It appears that it is (or was) a mixture, with phosphorus heptasulfide (P4S7) being a major component. Louis and Mary Fieser126 quote, with obvious relish, an out-of-doors preparation from red phosphorus and sulfur which often gives an excellent display of fireworks. A standard preparation of 3-methylthiophene uses the heptasulfide.127... [Pg.78]

Phosphorus heptasulfide was obtained from the Oldbury Electrochemical Company. It has been shown 2 that the phosphorus trisulfide used by earlier workers for such fusions was actually somewhat impure phosphorus heptasulfide. [Pg.74]

SYN PHOSPHORUS HEPTASULFIDE, free from yeUow or white phosphorus (DOT)... [Pg.1120]

Volhard-Erdmann cyclization. Synthesis of alkyl and aryl thiophenes by cyclization of disodium succinate or other 1,4-difunctional compounds (y-oxo acids, 1,4-diketones, chloroacetyl-substituted esters) with phosphorus heptasulfide. [Pg.1322]

See other pages where Phosphorus heptasulfide is mentioned: [Pg.53]    [Pg.699]    [Pg.73]    [Pg.881]    [Pg.884]    [Pg.885]    [Pg.60]    [Pg.100]    [Pg.881]    [Pg.884]    [Pg.885]    [Pg.59]    [Pg.1120]    [Pg.1120]    [Pg.1841]    [Pg.304]    [Pg.55]    [Pg.1166]    [Pg.986]    [Pg.1227]    [Pg.60]    [Pg.730]    [Pg.1038]    [Pg.722]    [Pg.1024]    [Pg.58]   
See also in sourсe #XX -- [ Pg.34 , Pg.73 ]

See also in sourсe #XX -- [ Pg.34 , Pg.73 ]

See also in sourсe #XX -- [ Pg.34 , Pg.73 ]

See also in sourсe #XX -- [ Pg.34 , Pg.73 ]

See also in sourсe #XX -- [ Pg.34 , Pg.73 ]

See also in sourсe #XX -- [ Pg.34 , Pg.73 ]

See also in sourсe #XX -- [ Pg.4 , Pg.7 , Pg.128 ]



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Heptasulfide

Pyrolysis, apparatus for of sodium methylsuccinate with phosphorus heptasulfide

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