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. Author manuscript; available in PMC: 2012 May 6.
Published in final edited form as: Org Lett. 2011 Mar 29;13(9):2196–2199. doi: 10.1021/ol200429a

Table 2.

Synthesis of Saturated 1,4-Benzodiazepinesa

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entry substrate product yield (%)b
1 graphic file with name nihms284743t1.jpg
14b
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17
78
2 14b graphic file with name nihms284743t3.jpg
18
88
3 graphic file with name nihms284743t4.jpg
14c
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19
94
4 graphic file with name nihms284743t6.jpg
14d
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20
71
5 14d graphic file with name nihms284743t8.jpg
21
74
6 graphic file with name nihms284743t9.jpg
14e
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22
82c
7 graphic file with name nihms284743t11.jpg
14a
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15
65
8 14a graphic file with name nihms284743t13.jpg
23
81c
9 14a graphic file with name nihms284743t14.jpg
24
62
10 14a graphic file with name nihms284743t15.jpg
25
84
11 14a graphic file with name nihms284743t16.jpg
26
60
a

Conditions: Reactions were conducted on a 0.15 mmol scale using 1.0 equiv substrate, 2.0 equiv ArBr, 2.0 equiv NaOtBu, 2 mol % PdCl2(MeCN)2, 4 mol % PPh2Cy, xylenes (0.2 M), 135 °C, 18–24 h reaction time.

b

Isolated yield (average of two experiments). In all cases, 2,3-disubstituted products were obtained with >20:1 dr.

c

This product contained ca. 8% of ketone side product16.