Triethylamine → HCID 68608764, compound

Participants

Reaction Conditions

Reaction Steps

Under a nitrogen atmosphere a solution of 15.1 g (47.0 mmol) (1R)—B-chlorodiisopinocampheylborane in 50 mL THF was added dropwise within 15 min to a solution of 9.2 g (38.9 mmol) 3-(8-methyl-2,3-dihydro-1,4-benzodioxin-6-yl)-2-oxo-propionic acid and 5.4 mL (39.0 mmol) triethylamine in 100 mL THF cooled to −35° C. and the reaction mixture was stirred for 1 h at RT. After the end of the reaction the reaction solution was evaporated down i.vac., combined with 200 mL 1 M NaOH and 150 mL TBME, stirred, the aqueous phase was separated off, acidified with 2 M HCl and extracted twice with 250 mL EtOAc. The combined organic phases were dried, filtered through activated charcoal and evaporated down i.vac.

Provenance & Evidence