is representative. Into a three-necked 500-mL, round-bottomed flask, equipped with a cold-finger condenser charged with solid C02 and ethanol, a nitrogen inlet, and a magnetic stirrer, was condensed ~250 mL of ammonia. To the ammonia was added t-BuOH (9.74 mmol) and Na metal (9.74 mol) to form sodium tert-butoxide and then PhCH2SH (9.74 mmol). To this solution was added 2-chloroquinoline (4.86 mmol), and the solution was irradiated for 90 min. The reaction was quenched by adding Mel (9.7 mmol), and the ammonia was allowed to evaporate. Water (100 mL) was added to the residue, and the mixture was extracted three times with 50 mL of diethyl ether. The ether extracts were dried and distilled. The residue was column-chromatographied on silica gel and eluted with petroleum ether. 2-Quinolyl benzyl sulfide was obtained as a white solid and was recrystallized from petroleum ether: mp 39-41 °C (lit.26 mp 44-45 °C); hydrochloride,

mixtures were incubated at 37 °C for 16 h and were periodically analyzed by LVE followed by ninhydrin visualization of the unreacted amino acid. See Table III for specific results.

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Bei der thermischen Umlagerung entstehen aus den bekannten l‐Trimethylsiloxy‐1‐vinylcycloalkenen (I) die Einschiebungsprodukte (II) und (III), deren Anteile bestimmt werden.