On the Redox Reaction of 1,2-Bis(diphenylphosphino) Alkanes Toward o-, and p-Quinones |
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| Authors: | Leila S Boulos Ewies F Ewies Amin F M Fahmy |
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| Institution: | 1. Department of Organometallic and Organometalloid Chemistry , National Research Centre , Dokki , Cairo , Egypt;2. Department of Organic Chemistry, Faculty of Science , Ain-Shams University , Abassia , Cairo , Egypt |
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| Abstract: | Abstract The reaction of 1,2-bis(diphenylphosphino)ethane with substituted o-benzo-quinones afforded new bis(6-hydroxycyclohexa-2,4-dienone) derivatives. Treatment of the same reagent with o-naphthoquinone, phenanthrenequinone, and acenaphthenequinone gave the respective bis(diphenylphosphoryl)ethylidenes or diacenaphthylenone derivatives. On the other hand, p-quinones react with 1,2-bis(diphenylphosphino)methane to yield the corresponding 4-hydroxycyclohexa-2,5-dien-1-ones. Possible reaction mechanisms are considered and the structural assignments are based on compatible analytical and spectroscopic data. |
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| Keywords: | 1 2-Bis(diphenylphosphino)alkanes o-quinones p-quinones bis(6-hydroxycyclo-hexa-2 4-dienone) hydroquinones |
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