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. Author manuscript; available in PMC: 2012 Jun 17.
Published in final edited form as: Org Lett. 2011 May 23;13(12):3218–3221. doi: 10.1021/ol201123b

Table 2.

Cascade Intramolecular N-Arylation/Intermolecular Carboamination Reactions

graphic file with name nihms298989u3.jpg
entry substrate product catalystb drc yield (%)d
1 graphic file with name nihms298989t5.jpg graphic file with name nihms298989t6.jpg A >25:1 (20:1) 76
2 (±)-5a graphic file with name nihms298989t7.jpg A 8:1 (5:1) 78
3 (±)-5a graphic file with name nihms298989t8.jpg Be >25:1 (5:1) 42
4 (+)-5a
92% ee
graphic file with name nihms298989t9.jpg B 8:1 (7:1)
86% ee
58
5 graphic file with name nihms298989t10.jpg graphic file with name nihms298989t11.jpg B 14:1 (5:1) 60
6 (−)-5d
87% ee
graphic file with name nihms298989t12.jpg A >25:1 (10:1)
91% ee
75
7 graphic file with name nihms298989t13.jpg graphic file with name nihms298989t14.jpg C 15:1 (3:1) 45
8 graphic file with name nihms298989t15.jpg graphic file with name nihms298989t16.jpg A 25:1 (12:1) 68
9 (±)-5b graphic file with name nihms298989t17.jpg A 22:1 (8:1) 63
10 (±)-5b graphic file with name nihms298989t18.jpg Be 7:1 (3:1) 56
11 (+)-5b
88% ee
graphic file with name nihms298989t19.jpg B >25:1 (10:1)
92% ee
56
12 graphic file with name nihms298989t20.jpg graphic file with name nihms298989t21.jpg B 11:1 (12:1) 79
13 (±)-5e graphic file with name nihms298989t22.jpg B 10:1 (7:1) 47
14 graphic file with name nihms298989t23.jpg graphic file with name nihms298989t24.jpg A 15:1 (5:1) 35
a

Conditions: Reactions were conducted on a 0.25 mmol scale using 1.0 equiv of substrate, 1.2 equiv of ArCl, 2.4 equiv of NaOtBu, catalyst (4 mol % [Pd]), toluene (0.25 M), 100 °C.

b

Catalyst A: Pd(OAc)2 (4 mol %), Cy4Dpe-Phos 15 (4 mol %). Catalyst B: Pd2(dba)3 (2 mol % complex), PCy3•HBF4 (4 mol %). Catalyst C: Pd2(dba)3 (2 mol % complex), X-Phos 14 (8 mol %).

c

Diastereomeric ratios are reported for the isolated products. Diastereomeric ratios in parentheses were observed in crude reaction mixtures.

d

Isolated yield (average of two experiments).

e

The reaction was conducted using 8 mol % PCy3•HBF4.