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Organophosphorus chemistry. 13 [1]. The Behaviour of 3-Aryliminoxindoles toward Alkyl Phosphites

โœ Scribed by Prof. Dr. Wafaa M. Abdou; Naglaa M. Abd El-Rahman; Mohamed R. H. Mahran


Publisher
John Wiley and Sons
Year
1989
Tongue
English
Weight
354 KB
Volume
331
Category
Article
ISSN
1615-4150

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4-Hydroxycoumarin (1) reacted with Wittig reagents (2) to give 4-benzoylmethylcoumarin (5A) or [3-(4-hydroxycoumarinyl)]carbonylmethylenetriphenylphosphorane (6) depending upon the nature of the phosphorus ylide used. Dialkyl phosphonates (3a,b) and trialkyl phosphites (4a,b) converted 1 into the re

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Wittig reagents 2 react with furfiurylidenemalonitrile (la) und thienylidenemalonitrile (Ib) to give a mixture of products (6 and 7). Compound l b reacts with dialkyl phosphites (3) and trialkyl phosphites (4) to give the phosphonate 1:l adducts 9 and 12, respectively. Structures of the new products