To further challenge the practicality of this method, we examined scalability, use of direct sunlight, and plausibility of a one-pot BASN synthesis (Figure ). Gram scale (10 mmol) synthesis of 2b was demonstrated in flow, affording a high yield (81%) and decent productivity (3 g/day). To our delight, we were also able to harness energy from sunlight on a fair day for a 5 mmol preparative scale synthesis of 2a, achieving a good yield (65%).