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37
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78651405629
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our case this is a Stille reaction with tributylstannylpropenol, see the Supporting Information for details.
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In our case this is a Stille reaction with tributylstannylpropenol, see the Supporting Information for details.
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-
-
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38
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78651395051
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This is a major advantage over N-protecting groups, which have to be removed by hydrogenolysis.
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This is a major advantage over N-protecting groups, which have to be removed by hydrogenolysis.
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-
-
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39
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78651389419
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The 6,7-dimethoxy substitution pattern is part of a large number of tetrahydroisoquinoline compounds with biological activity. Hence, we chose this substrate as the starting point of our studies.
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The 6,7-dimethoxy substitution pattern is part of a large number of tetrahydroisoquinoline compounds with biological activity. Hence, we chose this substrate as the starting point of our studies.
-
-
-
-
40
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78651388369
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With catalytic amounts of DBU the same enantioselectivity was found, however the reactions did not result in full conversion. The role of the base has to be elucidated further.
-
With catalytic amounts of DBU the same enantioselectivity was found, however the reactions did not result in full conversion. The role of the base has to be elucidated further.
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-
-
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41
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23744491506
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G. Lipowsky, N. Miller, G. Helmchen, Angew. Chem. 2004, 116, 4695
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43
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33646186113
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C. T. Shu, A. Leitner, J. F. Hartwig, Angew. Chem. 2004, 116, 4901
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45
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7644226812
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K. Tissot-Croset, D. Polet, S. Gille, C. Hawner, A. Alexakis, Synthesis 2004, 2586.
-
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Synthesis
, pp. 2586
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Tissot-Croset, K.1
Polet, D.2
Gille, S.3
Hawner, C.4
Alexakis, A.5
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46
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78651393012
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The reactions were scaled up to 1.0 mmol and gave the same results in terms of yields and enantioselectivities.
-
The reactions were scaled up to 1.0 mmol and gave the same results in terms of yields and enantioselectivities.
-
-
-
-
47
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78651385310
-
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The absolute configuration of the products was determined by comparison of the optical rotation of compound 2 with the literature value (Ref. [8]). The absolute configuration of the other products was assigned by analogy.
-
The absolute configuration of the products was determined by comparison of the optical rotation of compound 2 with the literature value (Ref. [8]). The absolute configuration of the other products was assigned by analogy.
-
-
-
-
48
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78651412302
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the absence of the Ir catalyst, no reaction was observed, thus indicating that the Ir catalyst is essential for this transformation to take place.
-
In the absence of the Ir catalyst, no reaction was observed, thus indicating that the Ir catalyst is essential for this transformation to take place.
-
-
-
-
49
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78651412136
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For a discussion of possible mechanisms for this transformation, see the Supporting Information.
-
For a discussion of possible mechanisms for this transformation, see the Supporting Information.
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