Table 2.
entry | substrate | product(s)b | temp; time | yield (%)c | |
---|---|---|---|---|---|
1 |
8 |
9 |
10 |
120 °C; 24 h | 49 exo (9)
46 endo (10) |
2 |
11 |
12 |
13 |
160 °C; 72 h | 23 CA (12)d |
3 | 160 °C; 72 h | 59 CA (12) + 21 HA (13) | |||
4 |
14 |
15 |
160 °C; 72 h | 87d | |
5 |
16 |
17 |
18 |
210 °C, 72 h | 56 CA (17, trans : cis = 1 : 1), 16 HA (18, trans : cis = 1 : 1) |
6 | 210 °C; μW, 3 h | 52 CA (17, trans : cis = 1 : 1), 20 HA (18, trans : cis = 1 : 1) | |||
7 |
19 |
20 |
21 |
180 °C, 72 h | 65 CA (20, trans : cis = 3 : 1)
33 HA (21, trans : cis = 3 : 1) |
8 |
22 |
23 |
200 °C; 72 h | 48 | |
9 |
24 |
25 |
26 |
200 °C; 72 h | 53 CA (25 only) |
10 | 210 °C, μW, 3 h | 55 CA (25) + 14 HA (26) | |||
11 |
27 |
28 |
200 °C; 72 h | 43 |
Reaction conditions: 3 equiv Cu(ND)2, 1 equiv Cs2CO3, DMF (0.08–0.1 M), temp, time.
Selectivity determined by analysis of the crude 1H NMR spectrum, and by amount of the isolated adducts.
Yield refers to amount of product isolated by chromatography on silica gel.
Reaction run with Cu(OAc)2 instead of Cu(ND)2. CA = carboamination product, HA = hydroamination product, ND = neodecanoate.