RSC Advances
Paper
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3
2
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.62 (m, 1H); C NMR (100 MHz, CDCl
3
): 74.3, 73.4, 49.2, 47.3,
8 X. Jiang, C. Wang, Y. Wei, D. Xue, Z. Liu and J. Xiao, Chem.–
Eur. J., 2014, 20, 58–63.
0.0, 37.8, 35.3, 33.1, 31.9, 27.8, 27.7, 24.1; MS (E.I., 70 eV) m/z (rel.
int.): 226 (3), 182 (4), 166 (6), 112 (11), 96 (5), 58 (100), 55 (5), 42 (4);
HRMS (ESI) calculated for C H N [M + 1]: 227.2482, found:
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14 31 2
227.2475.
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1
1 Z. Rong, W. Zhang, P. Zhang, Z. Sun, J. lv, W. Du and
Y. Wang, Catal. Commun., 2013, 41, 115–118.
2 K. Beydoun, T. vom Stein, J. Klankermayer and W. Leitner,
Angew. Chem., Int. Ed., 2013, 52, 9554–9557.
0
42
4
,4 -Methylenebis(N,N-dimethylaniline), white solid (69%
ꢁ
yield, entry 16, Table 3). Mp 86–89 C. The product was sepa- 13 Y. Li, X. Fang, K. Junge and M. Beller, Angew. Chem., 2013,
rated by column chromatography (petroleum ether (b.p. 60–
125, 9747–9750.
ꢁ
1
9
0 C)/EtOAc ¼ 24/1). H NMR (400 MHz, CDCl
3
): d ¼ 2.93 (s, 14 Y. Li, I. Sorribes, T. Yan, K. Junge and M. Beller, Angew.
1
3
12H), 3.84 (s, 2H), 6.72 (d, 4H), 7.08 (d, 4H); C NMR (100 MHz,
Chem., 2013, 125, 12378–12382.
CDCl
3
): 149.1, 130.4, 129.4, 113.1, 40.9, 39.9; MS (E.I., 70 eV) m/z 15 X. Cui, X. Dai, Y. Deng and F. Shi, Chem.–Eur. J., 2013, 19,
(rel. int.): 254(100), 253(78), 255(17), 237(15), 210(29), 134(24),
3665–3675.
126(17), 118(14).
16 Y. Zhang, X. Qi, X. Cui, F. Shi and Y. Deng, Tetrahedron Lett.,
2
011, 52, 1334–1338.
7 Y. Zhao, S. W. Foo and S. Saito, Angew. Chem., 2011, 123,
062–3065.
8 A. Mart ´ı nez-Asencio, D. J. Ram ´o n and M. Yus, Tetrahedron,
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9 R. Cano, D. J. Ram ´o n and M. Yus, J. Org. Chem., 2011, 76,
547–5557.
0 M. H. S. A. Hamid, C. L. Allen, G. W. Lamb, A. C. Maxwell,
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Catalyst characterization
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TEM analysis was carried out with a FEI-TF20 eld emission
transmission electron microscope. XRD measurements were
conducted by an X'Pert PRO (PANalytical) diffractometer. The
2
XRD diffraction patterns were scanned in the 2q range of 10–
5
ꢁ
9
0 . The pore-size distribution was calculated by Barrett, Joyner
and Halenda (BJH) method from desorption isotherm. The Pd
loading was measured by inductively coupled plasma-atomic
emission spectrometry (ICP-AES) using an Iris advantage
Thermo Jarrel Ash device. Diffuse reectance UV-vis spectra
were measured on an UV-vis spectrophotometer (UV-2550
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J. M. Marinas and A. A. Romero, Appl. Catal., A, 1998, 166,
4
(Shimadzu)) with BaSO as a reference at room temperature.
3
9–45.
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4 L. Xu, X. Li, Y. Zhu and Y. Xiang, New J. Chem., 2009, 33,
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5 H. Chen, C. E. Nanayakkara and V. H. Grassian, Chem. Rev.,
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Acknowledgements
2
This work was nancially supported by the National Natural
Science Foundation of China (21203219) and the Chinese
Academy of Sciences.
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6 M. Cargnello and B. T. Diroll, Nanoscale, 2014, 6, 97–105.
7 D. W. Manley, R. T. McBurney, P. Miller, R. F. Howe,
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