HuagongsheHuagongshe Chemistry Print Report · For research reference only
N-bromobutanimide → 6-(5-Bromo-2-n-propoxyphenyl)-3-methyl-1-n-propyl-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | N-bromobutanimide | HCID 67184 | — |
| Reactant | 3-Methyl-6-(2-propoxy-phenyl)-1-propyl-1,5-dihydro-pyrazolo[3,4-d]pyrimidin-4-one | HCID 135503803 | — |
| Product | 6-(5-Bromo-2-n-propoxyphenyl)-3-methyl-1-n-propyl-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one | HCID 136109008 | — |
Reaction Steps
The title compound was prepared from N-bromosuccinimide (4.9 g, 0.0276 mol) and 3-methyl-6-(2-n-propoxyphenyl)-1-n-propyl-1,5-dihydro-4H-pyrazolo-[3,4-d]pyrimidin-4-one (Example 18; 3.0 g, 0.0092 mol), following the procedure of Example 6, and was obtained as yellow crystals (1.11 g, 30%), m.p. 157-159° C., after crystallisation from ethyl acetate. Found: C,53.14; H,5.17; N,13.76. C18H21BrN4O2 requires C,53.34; H,5.22; N,13.82%.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US06200980B1 |
| Source dataset | uspto-grants-2001_03 |
| ORD ID | ord-530b11f9cdac42398d5cbf6dce62fa67 |
| Source note | uspto-grants-2001_03 |