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CAS No. : | 10242-10-1 | MDL No. : | MFCD00060512 |
Formula : | C9H5ClO3 | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | JETRXAHRPACNMA-UHFFFAOYSA-N |
M.W : | 196.59 | Pubchem ID : | 937838 |
Synonyms : |
|
Signal Word: | Warning | Class: | |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | |
Hazard Statements: | H315-H319-H335 | Packing Group: | |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
66% | To a stirred solution of 5-chlorobenzofuran-2 -carboxylic acid (0.100 g, 0.50 mmol, 1.0 equiv) in DMF (05 mL) was added HATH (0.380 g, 1.01 mmol, 2.0 equiv) at RT and stirred for 10 minutes. Then tert-butyi 4-aminopiperazine-l -carboxylate (0.112 g, 0.55 mmol, 1.1 equiv) was added followed by the addition of DIPEA (0 2 mL, 1.52 mmol, 3 0 equiv). The resulting reaction mixture was allowed to stir at RT for overnight. Product formation was confirmed by LCMS The reaction mixture was diluted with water (50 mL) and extracted with EtOAc (50 mL c 2). Tire combined organic layer was washed with water (30mL), brine solution (30 mL x 2), dried over anhydrous sodium sulfate and concentrated under reduced pressure, to obtain tert-butyl 4-(5-chlorobenzofuran-2-carboxamido)piperazine-l-carboxylate (0.140 g, 66 % Yield) as an off-white solid. LCMS 380.3 [M+H]+; NMR (400MHz, DMSO-de) d 9.90 (s, 1 H), 7.87 (s, 1 H), 7.70 (d, J= 8 8 Hz, 1 H), 7.57 - 7.44 (m, 2 H), 3 42 (br. s, 4 H), 2.83 (br. s ,4 H), 1.50 - 1.29 (m, 9 H). |
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