Table 1. Initial Development of Aminoboration.

entry	substrate	R	conditions	yield (%)a of 3
1	1a	H	50 °C, 15.5 h	0b
2	1b	CH2Ph	80 °C, 5 h	n.r.c
3	1b	CH2Ph	110 °C, 17 h	55
4	1c	Ts	50 °C, 4 h	n.r.c
5	1c	Ts	80 °C, 20 h	64d
6	1d	Mbs	80 °C, 20 h	66

^aIsolated yield of the Bpin product.

^bOnly 2-phenyl-1H-indole was obtained in 69% yield.

^cNo reaction observed as monitored by ¹H NMR spectroscopy.

^dAverage of two runs.