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CAS No. : | 84348-38-9 | MDL No. : | MFCD01861787 |
Formula : | C11H17NO4 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | ULLGRIBXGPATMA-QMMMGPOBSA-N |
M.W : | 227.26 | Pubchem ID : | 21727417 |
Synonyms : |
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Chemical Name : | (S)-1-(tert-Butoxycarbonyl)-4-methylenepyrrolidine-2-carboxylic acid |
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P280-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302 | Packing Group: | N/A |
GHS Pictogram: |
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* 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 |
---|---|---|
With hydrogen;palladium 10% on activated carbon; In isopropyl alcohol; under 760.051 Torr; for 18h; | A solution of (S)-l-(tert-butoxycarbonyl)-4-methylenepyrrolidine-2- carboxylic acid Example M.4b (4 g, 17.60 mmol) in 2-propanol (10 mL) was added to a nitrogen purged suspension of 10percent palladium on carbon (936 mg) in 2-propanol(240 mL) and the flask was charged with hydrogen gas (1 atm). After being stirred18, the catalyst was removed by filtration over celite and the filtrate concentrated.LC analysis showed the sample contained -14percent of the trans isomer, andrecrytallization from toluene enriched the cis isomer, Example M.4c, to 96percent purity (16: 1). 1H NMR (500 MHz, MeOD) delta ppm 4.21 - 4.17 (m, 1H), 3.76 - 3.67 (m,1H), 2.96 - 2.92 (m, 1H), 2.49 - 2.46 (m, 1H), 2.30 - 2.29 (m, 1H), 1.59 - 1.51 (m,1H), 1.47 / 1.43 (m, 9H), 1.10 -1.06 (m, 3H). |