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CAS No. : | 875515-76-7 | MDL No. : | MFCD11846188 |
Formula : | C7H3ClN2O2S | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | APAYWGOJUNTPCI-UHFFFAOYSA-N |
M.W : | 214.63 | Pubchem ID : | 22603621 |
Synonyms : |
|
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H315-H319-H335 | Packing Group: | N/A |
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 |
---|---|---|
83% | Stage #1: With 2,2,6,6-tetramethyl-piperidine; n-butyllithium In tetrahydrofuran; hexane at -78℃; for 1.5 h; Stage #2: at 20℃; for 2 h; |
To a stirring solution of 2,2,6,6-tetramethylpiperidine (1.484 mL, 8.79 mmol) inanhydrous THF (15 mL) at 0 °C under nitrogen was added 2.5 M BuLi in hexanes (3.52mL, 8.79 mmol) dropwise. The reaction mixture was stirred at 0 °C for 30 minutes, thenthe mixture was added to a solution of 4-chlorothieno[3,2-d]pyrimidine (Compound 12;1.00 g, 5.86 mmol) in anhydrous THF (15 mL) at -78°C dropwise over a period of 30minutes. The reaction was stirred at -78 °C for 1 hour, and then dry ice (2.58 g, 58.6mmol) was added to the reaction. The reaction was allowed to warm up to roomtemperature over a period of 2 hours. The reaction was diluted with EtOAc (100 mL) and washed with 0.1 M HC1. The organic layer was dried over MgSO4 and evaporated to dryness to obtain 4-chlorothieno[3,2-d]pyrimidine-6-carboxylic acid (Compound 13; 1.1 g, 83percent). MS (ESI) calcd for C7H3C1N2025: 213.96; found: 215.0 [M+H]. |
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