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Reaction of β-diketones with dimethyloxosulphonium methylide

✍ Scribed by B. Holt; J. Howard; P.A. Lowe

Publisher
Elsevier Science
Year
1969
Tongue
French
Weight
124 KB
Volume
10
Category
Article
ISSN
0040-4039

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✦ Synopsis

We have reported (1) that dimethyloxosulphonium q ethylide (I) reacts

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Treatment of 2-benzoylbenzoates with dimethyloxosulphonium methylide (1) gives 4-phenylisocoumrins (2); methyl 2-acetylbenzoate gives 4-methylene-3,4dihydroisocoumrin (3) under the same conditions. Corey's method' for the conversion of ketones into epoxides using sulphonium or oxosulphonium ylides