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On the cycloaddition of arylphosphine oxides with dimethyl acetylenedicarboxylate

✍ Scribed by György Keglevich; Tamás Körtvélyesi; Henrietta Forintos; Annamária Tamás; Krisztina Ludányi; Vladiszlav Izvekov; László Töke

Publisher
Elsevier Science
Year
2001
Tongue
French
Weight
152 KB
Volume
42
Category
Article
ISSN
0040-4039

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✦ Synopsis

The [2+2] cycloaddition reaction of dimethyl acetylenedicarboxylate (DMAD) and the P O moiety of cyclic P-(2,4,6-triisopropylphenyl) phosphine oxides giving an entry to oxaphosphetes is of general value and extended to cyclic and alicyclic phosphine oxides with different trialkylphenyl substituents on the phosphorus atom. The structures of the products obtained by the [2+2] cycloaddition have been studied by semiempirical quantum chemical calculations

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✍ S.F. Nelsen; J.P. Gillespie 📂 Article 📅 1969 🏛 Elsevier Science 🌐 French ⚖ 97 KB

The recent publication of Miller and Hedaya' on the photochemistry of 7,8dicarbomethoxytricyclo[4.2.2.0 2J5]deca-3,7,q-triene (1) leads us to report our rather different results. They found that 1 gave dimethyl phthalate, syn-tri-cycloC4.2.0.0 2J5]octa-3,7-diene (2), and cyclooctatetraene upon photo