Combine sugar, cinnamon, vanilla bean and seeds and 310ml water in a saucepan and bring to the boil, stirring to dissolve sugar. Add apricot halves and turn occasionally until just tender (3-5 minutes). Remove apricots with a slotted spoon and transfer to sterilised jars. Cool syrup, then add brandy and pour over apricots, seal jars, stand until cooled, then store in refrigerator. Apricots will keep refrigerated for 2-3 weeks after opening.