Table 1.

Order of Addition Study^a,^b

Entry	1	2	3	4	5	6	7	8
pyridine	X	O	X	X	O	O	X	O
Cu(OTf)2	X	X	O	X	X	O	O	O
precursor	X	X	X	O	O	X	O	O
[18F]KF stock	X	X	X	X	X	X	X	X
%RCC 1-Bpin	63±10%	14±20%	51±16%	47±6%	12±5%	48±18%	32±15%	23±2%
%RCC 1-B(OH)2	63±11%	2±0%	55±16%	57±4%	13±7%	52±10%	51±10%	47±17%
Entry	9	10	11	12	13	14	15	16
pyridine	X	O	X	X	O	O	X	O
Cu(OTf)2	X	X	O	X	X	O	O	O
precursor	X	X	X	O	O	X	O	O
[18F]KF stock	O	O	O	O	O	O	O	O
%RCC 1-Bpin	28±6%	1±0%	55±26%	50±3%	16±8%	46±13%	43±23%	27±3%
%RCC 1-B(OH)2	5±4%	1±0%	54±17%	58±10%	28±19%	54±14%	46±19%	40±16%

^aProcedure: step 1) Added ; stirred at 110 °C for 20 min; cooled; step 2) added ; stirred at 110 °C for 20 min; cooled; radio TLC;

^bRCCs are given as mean ± standard deviation, n = 3.