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A facile one-pot synthesis of functionalized fused benzochromene derivatives via intramolecular Wittig reactions

✍ Scribed by Eshghi, Hossein; Bakavoli, Mehdi; Abedini-Torghabeh, Javad; Rahimizadeh, Mohammad; Vakili, Mohammad

Book ID
121611666
Publisher
Springer Netherlands
Year
2013
Tongue
English
Weight
295 KB
Volume
41
Category
Article
ISSN
0922-6168

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## Abstract Treatment of triphenylphosphine with dialkyl acetylenedicarboxylate leads to 1:1 adduct and concomitant protonation of late adduct by pentan‐2,3,4‐trione 3‐oxime gave the reactive intermediate, vinyltriphenylphosphonium salts, which undergoes an intramolecular Wittig reaction to produce