Boron tribromide → HCID 136340575, compound

Participants

Reaction Steps

3.04 g of 5,5′-(2,5-bis(hexyloxy)-1,4-phenylene)bis(2-(3-(4-nitrophenoxy)phenyl)-1,3,4-oxadiazole) (3.6 mmol) prepared in Synthesis Example 9 was dissolved in 120 ml of dichloromethane at −78□, and 3.5 ml of boron tribromide (35.6 mmol) was added thereto, followed by slowly raising the temperature to 0□. Thereafter, the reaction was quenched by addition of methanol, followed by adding excess water. The resultant solution was neutralized with dichloromethane, filtered, and performing silica gel column chromatography (developed with trichloromethane) to yield 0.4 g of a product having Formula 38. 1H NMR (300 MHz, CDCl3) analytical results of the product were as follows:

Provenance & Evidence