Table 1. Decay Rates of 1,2,4-Benzotriazine Mustards in Acetonitrile-d6/D2O (1:1) at 50 °C Measured by 1H NMR.
compd | R1 | R2 | R3 | oxidation | k (d–1) |
---|---|---|---|---|---|
17a | H2 | N(CH2CH2OMs)2 | H | 1-oxide | 0.259 ± 0.060 |
18a | NH2 | N(CH2CH2OMs)2 | H | 1,4-dioxide | 0.045 ± 0.002 |
17b | NH2 | N(CH2CH2OTs)2 | H | 1-oxide | 0.127 ± 0.014 |
18b | NH2 | N(CH2CH2OTs)2 | H | 1,4-dioxide | 0.045 ± 0.002 |
21 | H | N(CH2CH2OTs)2 | H | 1-oxide | 0.050 ± 0.004 |
22 | H | N(CH2CH2OTs)2 | H | 1,4-dioxide | 0.055 ± 0.006 |
25 | H | H | N(CH2CH2OTs)2 | 1-oxide | 0.107 ± 0.013 |
26 | H | H | N(CH2CH2OTs)2 | 1,4-dioxide | 0.106 ± 0.001 |