Phospha-alkynes - Useful Building Blocks in Organic Chemistry<sup>1</sup>

Manfred Regitz, Wolfgang Rösch, Thomas Allspach, U. ANNEN, Karsten Blatter, Jürgen Fink, M. HERMESDORF, H. Heydt, U.‐J. VOGELBACHER, Oliver Wagner

Phosphorous and Sulfur and the Related Elements · 1987 · 24 citations · 3 references

Concepts

Abstract

Abstract The syntheses of phospholes (7, [3+2]-cycloaddition), bicyclophosphaalkenes (17, [4+2]-cycloaddition), and phosphabenzenes (15, [4+2]-cycloaddition followed by an extrusion process) starting from the phosphaalkynes (4) are described. The 2–Dewar phosphabenzene 18, obtained from the cyclobutadiene 21 and 4 (R =tBu), is the starting material for the synthesis of the valency isomers 19, 20, 22, and 23.

References

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