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SNAr–Arbuzov reactions between 2,6-bistriazolylpurines 6a–i and P(OEt)3 according to Scheme 6.
| entry | R | t, h | yield of 4, % |
| 1 |  |
3 | 4a, 72 |
| 2 |  |
20 | 4b, 44 |
| 3 |  |
14 | 4c, 30 |
| 4 |  |
6 | 4d, 76 |
| 5 |  |
2 | 4e, 82 |
| 6 |  |
23 | 4f, 40 |
| 7 |  |
9 | 4g, 80 |
| 8 |  |
8 | 4h, 27 |
| 9 |  |
14 | 4i, 70 |
