Fluorosulphonate, ethyl methyl

Several analogous compounds have also been prepared, such as methyl fiuorosulphonate and ethyl fluorosulphonate. These are liquids with ethereal odours, having both lachr5unatory and toxic properties. The ethyl derivative has greater lachr5miatory power than the methyl. ... [Pg.255]

Arylethylisothiocyanates underwent an intramolecular cyclization to give 1-ethylthio- or l-methylthio-3,4-dihydroisoquinolines when treated with triethyloxo-nium fluoroborate or ethyl- and methyl-fluorosulphonate respectively. Cyclization with aluminium chloride or polyphosphoric acid followed by alkylation of the resultant thiolactam gave the same products (Scheme 96). ... [Pg.248]

Various Side-chain Reactions.—2-(2-Thienyl)ethyl isocyanate has been prepared from the corresponding primary amine, carbonyi suiphide, and. S-ethyl chloro-thioformate. Cyclization of 2-(2-thienyl)ethyl isothiocyanate with methyl fluorosulphonate or triethyloxonium tetrafluoroborate gave (178a) and (178b), respectively. The 3-thienyl isomer reacted in the same way. Monoesters of aliphatic dicarboxylic acids and 2-(2-thienyl)ethanol have been prepared in con-... [Pg.272]

Convenient methods for the S-alkylation of thiophens with the methyl or ethyl esters of fluorosulphonic acid, or with methyl iodide and AgBp4, have been worked out. The ylide from the methyl derivative has been obtained. ... [Pg.441]

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