Sodium Hydroxide → HCID 2733678, compound

Participants

Reaction Steps

Preparation A1, Step 2: A sample of (1R,6S)-6-benzyloxycarbonylamino-cyclohex-3-enecarboxylic acid methyl ester (91.4 g) was dissolved in MeOH (500 mL) prior to the dropwise addition of NaOH (25.3 g) in water (95 mL). After 3 h, the solution was partially concentrated and an Et2O/water mixture was added. The aqueous layer was separated and was acidified (pH ˜2) with concentrated HCl. The resulting mixture was extracted with EtOAc. The combined organic layers were washed with water and brine before they were dried, filtered, and concentrated to give (1R,6S)-6-benzyloxycarbonylamino-cyclohex-3-enecarboxylic acid (72.7 g). MS found: (M+H)+=276.2.

Provenance & Evidence