Sodium Hydroxide → HCID 11301804, compound

Participants

Reaction Steps

A solution (0.07 M) of ethyl 4-cyclohexyl-5-phenyl-6H-thieno[2,3-b]pyrrole-2-carboxylate in THF/MeOH (1:1) was treated with aqueous NaOH (2 N solution, 4 eq.). The mixture was heated to reflux for 6 hours. After cooling down, the reaction was concentrated and acidified to pH 1 with aqueous HCl (6 N). The resulting mixture was dissolved with DMSO and purified by RP-HPLC (Conditions: Waters X-TERRA MS C18, 5 micron, 19×150 mm; flow: 20 mL/min; Gradient: A: H2O+0.1% TFA; B: MeCN+0.1% TFA; linear from 95% A to 5% A in 10 min) to afford the title compound (54%) as a solid.

Provenance & Evidence