Dibenzyl sulfide and methyl benzyl sulfide demethylate and transylidate 2-methylphenylsulfuranylidenedimedon, in which connection the demethylation predominates. © 1980 Plenum Publishing Corporation.

1. The "iodonium method" is an efficient way of synthesizing the selenonium ylides: 2-methylphenylselenuranylidenedimedon and methylphenylselenuranylidenedibenzoylmethane. 2. Similar to S-alkyl-substituted sulfonium ylides, ...

Triphenylphosphine and tris (dimethylamino)phosphine demethylate 2-methylphenylselenuranylidenedimedon and methylphenylselenuranylidenedibenzoylmethane to give the corresponding enolate-anion of phosphonium salts. © 1980 ...

The review is devoted to the chemistry of stabilised sulphonium ylides, i. e. ylides with substituents at the carbanionic carbon atom capable of delocalising its negative charge. The physical properties of compounds of ...