Figure 8: Striking tertiary carbon atom effect.
From: A C–H bond activation-based catalytic approach to tetrasubstituted chiral allenes

Secondary propargylic carbonate 2o only demonstrated the opposite regioselectivity.
From: A C–H bond activation-based catalytic approach to tetrasubstituted chiral allenes
Secondary propargylic carbonate 2o only demonstrated the opposite regioselectivity.