Table 3.

Nitrosation of Electron-rich and Electron-neutral Potassium Aryltrifluoroborates

entry	product	yield (%)
1	1a	95a
2	1b	89
3	1c	91
4	1d	92
5	1e	91
6	1f	90
7	1g	93
8	1h	92
9	1i	88

Reaction conditions: 1 mmol of aryltrifluoroborate and NOBF₄ (1.03 equiv) in 3 mL of CH₃CN for 30 sec at room temperature in an open flask.

^a5 mmol scale.