1162
S. W. Kshirsagar et al. / Tetrahedron Letters 49 (2008) 1160–1162
Table 3
pressure and the product purified by column chromatogra-
phy on silica gel (60–120 mesh).
Mg–Al hydrotalcite catalyzed conversion of benzyl halides to
benzaldehydes
Sr.
no.
Substrate
Product
Time
(h)
Yield
(%)
Acknowledgement
CHO
CHO
Cl
Br
The authors thank the CSIR, New Delhi, for a research
grant (No. 01 (2056)/06/EMR-II).
1
2
10
6
80
82
References and notes
1
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4
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4
5
6
7
3.5
3
78
89
70
92
96
Br
Cl
Br
Cl
1
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CHO
CHO
5
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Br
1
15
1
8
O N
2
O N
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2
1
CHO
CHO
Br
Cl
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MeO
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1
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1.5
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1
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1
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9
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1
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1
CHO
Cl
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1
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2
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643.
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2
001, 66, 6620.
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(
2 Â 5 ml). Distilled water (20 ml) was added to the filtrate.
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The ethyl acetate layer was concentrated under reduced