Table 5.
PA, ETE and ΔH of starting materials and fragments of compounds 1 and 2.
| Molecule | PA (kJ/mol) | ETE (kJ/mol) | ΔH (kJ/mol) | |
|---|---|---|---|---|
| Compound 1 | 451 | 1017 | 1468 | |
| Starting material | Vanillin (Y) | 120 | 386 | 1518 a |
| Fragment 1 | 4-(Aminomethyl)-2-methoxyphenol (Y’) | 151 | 335 | 1458 b |
| Fragment 2 | 4-Methyl-2-methoxyphenol (Y”) | 155 | 328 | 1449 c |
| Compound 2 | 448 | 984 | 1432 | |
| Starting Material | Syringaldehyde (X) | 118 | 371 | 1484 d |
| Fragment 1 | 4-(Aminomethyl)-2,6-dimethoxyphenol (X’) | 152 | 317 | 1424 e |
| Fragment 2 | 4-Methyl-2,6-dimethoxyphenol (X”) | 155 | 310 | 1413 f |
a ΔH = 3 equiv. PA (Y) + 3 equiv. ETE (Y), b ΔH = 3 equiv. PA (Y’) + 3 equiv. ETE (Y’), c ΔH = 3 equiv. PA (Y”) + 3 equiv. ETE (Y”), d ΔH = 2 equiv. PA (X) + 1 equiv. PA (Y) + 2 equiv. ETE (X) + 1 equiv. ETE (Y), e ΔH = 2 equiv. PA (X’) + 1 equiv. PA (Y’) + 2 equiv. ETE (X’) + 1 equiv. ETE (Y’), f ΔH = 2 equiv. PA (X”) + 1 equiv. PA (Y”) + 2 equiv. ETE (X”) + 1 equiv. ETE (Y”).