Are aliphatic amines SABRE amenable?
There have been a number of interesting papers just this year on this. Simon Duckett from York is leading the charge, and has recently demonstrated successful hyperpolarisation of a number of amines, including ammonia, as well as a number amides. Previously, a limiting factor in the success of the SABRE method has been the ability of the substrate to coordinate to the catalyst centre. Recent results show that this can be overcome using a relayed polarisation transfer method using a co-ligand.

For a couple of examples, check out:


Chem. Sci. 2018, 9 (15), 3677–3684
Sci. Adv. 2018, 4 (1), eaao6250
anything else by Simon Duckett in recent years