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45849134087
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Especially for the synthesis of macrolides, alternative methods targeting other positions to achieve ring closure, such as ring closing metathesis or (Suzuki) cross coupling, have gained in importance during the last years; for corresponding reviews, see, for RCM
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For a recent application of NHC - Fe complexes for an aerobic esterification with boronic acids, see
-
For a recent application of NHC - Fe complexes for an aerobic esterification with boronic acids, see: Rosa, J. N.; Reddy, R. S.; Candeias, N. R.; Cal, P. M. S. D.; Gois, P. M. P. Org. Lett. 2010, 12, 2686
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(2010)
Org. Lett.
, vol.12
, pp. 2686
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Rosa, J.N.1
Reddy, R.S.2
Candeias, N.R.3
Cal, P.M.S.D.4
Gois, P.M.P.5
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70
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77957842325
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Initial attempts to apply this methodology to the synthesis of the most challenging eight-membered ring system (2a) affords the desired lactone in only 14% yield. However, this is remarkable as a related Ru-catalyzed approach only yielded 7% of the envisaged 8-ring. See ref 4h.
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Initial attempts to apply this methodology to the synthesis of the most challenging eight-membered ring system (2a) affords the desired lactone in only 14% yield. However, this is remarkable as a related Ru-catalyzed approach only yielded 7% of the envisaged 8-ring. See ref 4h.
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