Here are the Reason 13 Custom Keyboard Shortcuts I have set up on my Mac. To make your own, just navigate to System Prefs > Keyboard > Shortcuts > App Shortcuts and then hit the + symbol to load Reason and then add the menu title and assign a keyboard shortcut. Be aware that you have to input the menu title exactly as it is in the program dropdown menus or else they won't work.
Also, you'll notice that I have ^K for "Save Algoritm Patch As..." that will work with any other instrument. For example if I swap out the Algoritm synth and replace it with a Europa, it will still work and you can save the Europa patch.