Trimethyloxonium tetra

Electrolytic reduction, apparatus, 52, 23 Enol acetates, acylation of, 52,1 Enol esters, preparation, 52, 39 Epichlorohydrin, with boron trifluoride diethyl therate and dimethyl ether to give trimethyloxonium tetra-fluoroborate, 51,142 ESTERIFICATION OF HINDERED ALCOHOLS f-BUTYL p-TOLUATE,... 

Diazadiphospholes (182) (R = Me, Ph) are obtained from the condensation of methylene bis(dichlorophosphine) and a hydrazine (Scheme 56) <85AG127>. l-Phenyl-l,2,3,5-diazadiphosphole is a colorless, air-sensitive liquid. It is not alkylated by methyl iodide or trimethyloxonium tetra-... 

Although some electrophilic reagents cause substitution in the ring at C-3 and C-5, very reactive compounds, such as trimethyloxonium tetra-fluoroborate Meerwein s reagent)and nitronlum tetraHuo-... 

Methylation of the sulfur atom of thietanes 59a-c with trimethyloxonium tetra-fluoroborate gives the unstable salts A stable methiodide salt of... 

Trimethylchloroalane, 50,107 Trimethylcydohexanones, reduction to axial alcohols, 50,15 Trimethyleneimine, 53,13 TRIMETHYLOXONIUM TETRA-FLUOROBORATE, 51,142... 

Methylation of methylselanyl- and phenylselanylcyclopropanes took place on reaction with either trimethyloxonium tetrafluoroborate or a mixture of iodomethane and silver(I) tetra-fluoroborate resulting in Se-C bond formation.Yields close to 80% of the (1-decylcyclo-propyl)dimethyl- or (l-decylcyclopropyl)methylphenylselenonium tetrafluoroborate were obtained. 

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