Potassium Carbonate → HCID 16118115, compound

Participants

Reaction Steps

0.2 mol (44.6 g) of 4-hydroxy-4′-cyanoazobenzene, 2 mol (488.1 g) of 1,6-dibromohexane, 1.45 mol (220.4 g) of K2CO3 and 800 ml of acetone were charged in a 2-liter three-necked flask and reacted under reflux for 20 hours by using a water bath. After cooling to a room temperature, by-products and excess K2CO3 were removed by filtration. After concentrating to about 1/2 by using a rotary evaporator, the product was left in a refrigeration box to be crystallized. After filtration under suction, crystals were washed with n-hexane and dried under a reduced pressure (0.117 mol (45.3 g, yield; 58.6%)). Further, they were recrystallized in ethanol to obtain 0.094 mol of 4-(6-bromohexyloxy)-4′-cyanoazobenzene (36.3 g, yield: 47.0%)

Provenance & Evidence