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Steric and electronic effects of substituents at phosphorus on the course of the wittig reaction in protic solvents

✍ Scribed by David W. Allen; Phillip Heatley; Barrie G. Hutley; Malcolm T.J. Mellor

Publisher
Elsevier Science
Year
1974
Tongue
French
Weight
170 KB
Volume
15
Category
Article
ISSN
0040-4039

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✦ Synopsis

The Wittig reaction between a phosphonium salt and a carbonyl compound in the presence of alkoxide ion in protic solvents may occur by two competing mechanistic courses (see Scheme).

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## Abstract Kinetic studies are reported for the reactions with aniline in benzene of a series of X‐phenyl 2,4,6‐trinitrophenyl ethers [X = H; 2‐, 3‐, 4‐CH~3~; 2,4‐, or 2,6‐(CH~3~)~2~] a–f, and the results compared with those of the corresponding nitro derivatives. In the methyl series, kinetic dat