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Search results for: claisen rearrangement
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... prepared in by a route involving an Ireland-Claisen rearrangement and a reductive 1,6-enyne ... 4 with singlet oxygen followed by Kornblum-DeLaMare rearrangement with DBU to afford ketone 5. ...
... . DOI: 10.1021/ol4019453) Ireland-Claisen rearrangement of the lactone 4 to give ... pyrrolidine 5 with high geometric control. This was readily converted to Limazepine E ( ...
... began with the inexpensive diol 7. Johnson-Claisen rearrangement led to racemic 8. Opening ... addition of vinyl magnesium bromide and brominative rearrangement then completed the preparation of the allylic ...
... followed by the Johnson modification of the Claisen rearrangement gave 10, that was carried ... the central framework of 3 by the rearrangement of 1 to 2. The starting ...
... for further transformation, for instance by Claisen rearrangement. Prochiral ?-substituted enones such as ... are inexpensive starting materials. Patrick Walsh of the University of Pennsylvania recently reported ( ...
... took them to the precursor of two Claisen rearrangements. The first is perhaps the ... obvious - the alkenes placed in the right way to encourage carbon-carbon bond formation upon ...
... ; SELECTIVE 1,4-CHIRAL INDUCTION; IRELAND-CLAISEN REARRANGEMENT; INTERNAL ASYMMETRIC INDUCTION; DELTA-HYDROXY ... 2 ,3 ] -Wittig sigmatropic rearrangement. K. Mikami, T. ...
... the enantioselective hydrogenation of 14 followed by Claisen rearrangement established the cyclic quaternary center of ... 10.1002/anie.201205913) that the Rh-mediated rearrangement of 12 to 13 proceeded with substantial ...
... of Chugai Pharmaceutical Co. optimized the Ireland-Claisen rearrangement of 18 to 19 (Org ... reduction of 16, leading, after rearrangement of the intermediate allyl diazene, to ...
... Deprotonation/silylation set the stage for Claisen rearrangement to give 11. The subsequent ... rearrangement is an equilibrium process, driven by the ring strain of 11. K ...
