tert-butyl (3S)-3-(hydroxymethyl)piperazine-1-carboxylate → (S)-tert-butyl 4-(2-hydroxy-2-(4-methyl-1-oxo-1,3-dihydroisobenzofuran-5-yl)ethyl)-3-(hydroxymethyl)piperazine-1-carboxylate

Participants

Reaction Conditions

Reaction Steps

4-Methyl-5-oxiran-2-yl-2-benzofuran-1(3H)-one (3.00 g, 15.8 mmol) and (S)-4-N-BOC-2-hydroxymethylpiperazine (5.12 g. 23.7 mmol) were suspended in ethanol (10 mL) in a 20 mL microwave tube. The reaction mixture was degassed and heated in a microwave apparatus for 30 min at 150° C. The reaction mixture was evaporated to dryness, then chromatographed through a 330 g Redi-sep column and eluted with a solvent system of 1:1 EtOAc/hexane to 100% EtOAc to yield the title compound. LC-MS: M+1=407.

Provenance & Evidence