Let’s presume you have created a proper chart of accounts with either capital accounts or owner’s equity, depending on your form of organization.
Create the expense claim to record the purchase, allocating the transaction to the applicable expense account. This creates a liability in the account called Expense claims, showing that the business owes you money for making a purchase on its behalf. Next, the liability should be cleared. If you want to actually reimburse yourself, use Spend Money and allocate to Expense claims. This is also what you would do if an employee made the purchase with his/her own funds. If you are an owner/partner/shareholder, however, it would be more usual to use a journal entry to clear the liability. Debit Expense claims and credit your Capital account or Owner's equity. For convenience, you can clear expense claims periodically, say once per month. No need to clear each one individually. For employees you would probably clear claims every pay day.