Table 3. Reactivity of triynes of different tethers a .
aConditions: toluene, 90 °C, 14 h.
bIsolated yield.
cDiastereomeric ratio as determined by 1H NMR of crude.
dAt 130 °C, 14 h.
aConditions: toluene, 90 °C, 14 h.
bIsolated yield.
cDiastereomeric ratio as determined by 1H NMR of crude.
dAt 130 °C, 14 h.