Table 2.
Synthesis of 1-(2-Alkenyl)-bicyclo[3.3.0]oct-2-enes 18
| R1 | R2 | R3 | yield (%)a | |
|---|---|---|---|---|
| 18a | Ph | nHex | Ph | 86 |
| 18b | Ph | nHex | 3-MeOPh | 78 |
| 18c | Ph | nHex | 4-MeOPh | 72 |
| 18d | Ph | nHex | 4-MePh | 62 |
| 18e | Ph | nHex | 4-EtPh | 70 |
| 18f | Ph | nHex | 4-nBuPh | 78 |
| 18g | Ph | nHex | 4-tBuPh | 51 |
| 18h | Ph | nHex | 4-PhPh | 60 |
| 18i | Ph | nHex | nPr | 54 |
| 18j | Ph | nHex | nBu | 75 |
| 18k | Ph | nHex | nHex | 65 |
| 18l | Ph | nHex | nOct | 56 |
| 18m | 3-MeOPh | nHex | Ph | 75 |
| 18n | 4-EtPh | nHex | Ph | 70 |
| 18o | nPr | nHex | Ph | 82 |
| 18p | nBu | nHex | Ph | 88 |
| 18q | nHex | nHex | Ph | 86 |
| 18r | cHex | nHex | Ph | 80 |
| 18s | (CH2)3OH | nHex | Ph | 61 |
| 18t | Ph | H | Ph | 58 |
| 18u | Ph | nBu | Ph | 71 |
| 18v | Ph | nOct | Ph | 73 |
| 18w | Ph | SiMe2Ph | Ph | 45 |
Isolated yield of >95% pure material.