Table 10. Arylmethyl- and Heteroarylmethyl-Based Photoremovable Protecting Groups.
| PPG | protected group | λmax/nm | λirr/nm | release yield/% | Φ | ref |
|---|---|---|---|---|---|---|
| 164 (benzyl) | amine (as a carbamate) | 254 | 75 | 0.15 | (1) | |
| 166 (DMB) | amine (as a carbamate) | 280 | 263–312 | 85 | (311) | |
| 168 (DMATr) | alcohol | 309 | broadband | ∼85 | 0.12 | (315) |
| 168b | alcohol | 92–100 | 0.23 | (346) | ||
| 169 (Ddz) | amines (as a carbamate) | 276, 282 | broadband | (316) | ||
| 170 (Px) | alcohol | 254 or 300 | ∼90 | (317) | ||
| 171 (S-Px) | alcohol | 300 or 350 | ∼90 | (318,319) | ||
| 174 | carbonyl | 297 | >280 | 92 | 0.17 | (315) |
| 176 (Aqm) | carboxylate, alcohol (as a carbonate), carbonyl | 330 | 350 | ∼80 | ∼0.1 | (324,326d) |
| 181 (BHQ) | carboxylate, phosphate, carbonyl | 369 | 365 | ∼90 | 0.04 | (330a, 331, 335) |
| 184 (NQMP) | alcohol, phenol, carboxylate | 307 | 300 or 350 | 72–100 | 0.1–0.3 | (338) |
| 186 (DHB) | alcohol, phenol, carboxylate, carbonyl, glycol | 297 | 300 | 60–100 | 0.1–0.3 | (339, 340) |
| 194 | carboxylate, alcohol | 438 | >410 | 94–97 | 0.072–0.093 | (327) |