Table 3.
aThe reaction was carried out on a 0.2 mmol scale, and Rh2(S-TFPTTL)4 (1.0 mol%) was added as a solution in TBME (1.0 mL) via syringe pump in 40 min under inert atmosphere at 40 °C. The yields are given in isolated yields.
bThe reaction was carried out on a 4.0 mmol scale with 0.5 mol% catalyst loading.
cAt 60 °C for 12 h.
dRh2(S-PTAD)4 (1.0 mol%) was used as the catalyst.
eThe reaction was carried out in cyclohexane:TBME = 1:10 at 30 °C.