2-Methyl-2-butene → HCID 68625771, compound

Participants

Reaction Steps

5-Ethyl-5-formyl-N,N-dimethyl-hexahydro-cyclopenta[c]pyrrole-2-carboxylic acid dimethylamide 19b (0.4 g, 1.68 mmol) was dissolved in the solvent mixture of 18 mL of tetrahydrofuran and 9 mL of water, followed by addition of sodium dihydrogenphosphate dihydrate (787 mg, 5.04 mmol), sodium chlorite (0.454 g, 5.04 mmol) and 2-methyl-2-butene (354 mg, 5.06 mmol) at 0° C. The reaction mixture was reacted at 0° C. for 2 hours under nitrogen atmosphere. The reaction was monitored by TLC until the disappearance of the starting materials. The mixture was extracted with ethyl acetate. The combined organic extracts were dried over anhydrous magnesium sulfate, filtered and concentrated under reduced pressure to obtain the title compound 5-ethyl-2-dimethylcarbamoyl-hexahydro-cyclopenta[c]pyrrole-5-carboxylic acid 19c (0.426 g, yield 100%) as a yellow solid which was directly used in the next step.

Provenance & Evidence