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The dilithio-derivative can be ɑ-monoalkylated in high yield, and the process repeated to give the dialkyl derivative: J. Chem. Soc., Chem. Commun., 714 (1975). Reaction of the dianion with terminal epoxides gives -hydroxy acids which can be cyclized to ɑ-phenylthio--lactones. These can desulfurized with Raney nickel: J. Am. Chem. Soc., 108, 5352 (1986), or oxidatively, leading to butenolides: Chem. Lett., 385 (1974)./n
Gefahrenhinweise (EU): H315-H319-H335
Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.
Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves and eye/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.