Research Article
Preparation of New α-Aminophosphonate Derivatives by Kabachnik-Fields Reaction Using a Recyclable Catalyst
Table 2
Elemental analysis and IR data of compounds (4a–o).
| | Mol. formula | Elemental analysis found (Calc.) | IR spectral data in cm−1 | | C | H | N | –NH | P=O | P–C |
| | 4a | C19H25ClNO5P | 55.23 (55.14) | 6.02 (6.09) | 3.32 (3.38) | 3390 | 1285 | 747 | | 4b | C17H20ClN2O7P | 47.38 (47.40) | 4.59 (4.68) | 6.47 (6.50) | 3338 | 1241 | 739 | | 4c | C18H22ClN2O7P | 48.57 (48.60) | 4.94 (4.99) | 6.27 (6.30) | 3135 | 1210 | 751 | | 4d | C19H25ClNO5P | 55.18 (55.14) | 6.13 (6.09) | 3.32 (3.38) | 3381 | 1268 | 745 | | 4e | C17H20ClN2O7P | 47.37 (47.40) | 4.69 (4.68) | 6.48 (6.50) | 3340 | 1263 | 765 | | 4f | C18H22ClN2O7P | 48.58 (48.60) | 4.94 (4.99) | 6.27 (6.30) | 3421 | 1266 | 756 | | 4g | C20H28NO5P | 61.14 (61.06) | 7.13 (7.17) | 3.52 (3.56) | 3405 | 1276 | 743 | | 4h | C18H23N2O7P | 52.72 (52.68) | 5.68 (5.65) | 6.80 (6.83) | 3401 | 1271 | 741 | | 4i | C19H25N2O7P | 53.75 (53.77) | 5.97 (5.94) | 6.54 (6.60) | 3375 | 1256 | 762 | | 4j | C16H28NO5P | 55.61 (55.64) | 8.19 (8.17) | 3.99 (4.06) | 3399 | 1235 | 748 | | 4k | C14H23N2O7P | 46.45 (46.41) | 6.44 (6.40) | 7.70 (7.73) | 3410 | 1247 | 753 | | 4l | C15H25N2O7P | 47.84 (47.87) | 6.73 (6.70) | 7.39 (7.44) | 3438 | 1278 | 769 | | 4m | C19H25ClNO5P | 55.18 (55.14) | 6.12 (6.09) | 3.35 (3.38) | 3385 | 1290 | 758 | | 4n | C17H20ClN2O7P | 47.46 (47.40) | 4.63 (4.68) | 6.47 (6.50) | 3356 | 1274 | 749 | | 4o | C18H22ClN2O7P | 48.63 (48.60) | 4.97 (4.99) | 6.26 (6.30) | 3391 | 1256 | 758 |
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