5-nitropent-1-ene

Conditions: temp:-10.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Cool to −10° C. a well stirred mixture of O-allyl-N-(9-anthracenylmethyl)-cinchonidinium bromide (0.480 g, 0.8 mmol), potassium fluoride (3 gr, 51 mmol), THF (150 mL) and 5-nitropent-1-ene (2.34 g, 20 mmol) and treat with a solution of (S)-2-dibenzylamino-3-phenylpropionaldehyde (2.640 gr, 8 mmol). Allow mixture to warn to room temperature and stir for two days. Concentrate under reduced pressure. Purify on silica gel with hexane/ethyl ether mixtures to give a mixture of two products (2.7 g, 75%). to warn to room temperature stir for two days Concentrate under reduced pressure Purify on silica gel with hexane/ethyl ether to give