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Search results for: hydroboration

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... conversion of the alkene precursor to 11 is stereochemically complementary to the results expected from hydroboration. Much progress has been reported on the specific homologation of terminal alkenes. ...
URL: https://www.organic-chemistry.org/Highlights/2007/10September.shtm
... METHODS/TOTAL SYNTHESES/VANCOMYCIN/BIOMIMETIC APPROACH/MACROCYCLIZATION/PEPTIDES Transition-metal promoted hydroborations of alkenes, emerging methodology for organic transformations. K. Burgess, M ...
URL: https://www.organic-chemistry.org/abstracts/authors/burgess-k.shtm
... ALLYLIC ESTERS/FORMIC-ACID/HYDROSILYLATION/REDUCTION/DERIVATIVES/FUNCTIONALIZATION/ALLENYLBORANES/HYDROBORATION/ALLYLSILANES T. Hayashi, in Studies in Natural Products Chemistry, Vol ...
URL: https://www.organic-chemistry.org/abstracts/authors/hayashi-t.shtm
... prepared from the stannyl aldehyde 4. Homologation gave the enyne 5, which on hydroboration and oxidation gave 6. Earlier, Professor Roush had optimized the crotylation of ...
URL: https://www.organic-chemistry.org/Highlights/2008/03November.shtm
... the allyl stannane 9, again employing a procedure developed in the Ley group. Hydroboration delivered the aldehyde 11, which was crotylated with 12, following the H ...
URL: https://www.organic-chemistry.org/Highlights/2008/04August.shtm
... . 2007, 9, 3555.) that the product 11 from enantioselective Rh-catalyzed hydroboration can be homologated to 13. Conjugate addition of stabilized carbanions can also be ...
URL: https://www.organic-chemistry.org/Highlights/2008/08September.shtm
... double bond migration. In a second-generation total synthesis of (+ )-minfiensine, the hydroboration of scaffold 3 proceeded under microwave heating with 9-BBN in THF at 100 C ...
URL: https://www.organic-chemistry.org/Highlights/2008/15April.shtm
... proceeded smoothly, to deliver 19 with high diastereocontrol. To complete the synthesis, hydroboration with 9-BBN was effected on the free carboxylic acid 3, and Pd-mediated coupling ...
URL: https://www.organic-chemistry.org/Highlights/2009/07September.shtm
... ) found it convenient to set the relative configuration around the six-membered ring by double hydroboration/oxidation of the diene 4. (+ )-Bruguierol A (9) ...
URL: https://www.organic-chemistry.org/Highlights/2009/16November.shtm
... unprotected alcohol 8 cyclized most efficiently. Selective cleavage of the monosubstituted alkene followed by hydroboration delivered the alkaloid Isofagomine (10). Brian M. Stoltz of Caltech ...
URL: https://www.organic-chemistry.org/Highlights/2009/19January.shtm
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