Table 2.
entry | R1 | product | R2 | yielda (96) |
---|---|---|---|---|
1 | Ph (la) | 2a | Cy | 60 |
2 | PhCH2CH2 (lb) | 2b | Cy | 28 |
3 | n-C5H11 (lc) | 2c | Cy | 22 |
4 | i-Pr (Id) | 2d | Cy | 19 |
5 | t-Bu (le) | 2e | Cy | 0 |
6 | Ph (la) | 3 | n-Pr | 45 |
7 | Ph (la) | 4 | PhCH2CH2 | 21 |
8 | PhCH,CH, (lb) | S | i-Bu | 14 |
Used 3 equiv of silicate and 15 mol % of 4CzIPN.