2 article(s) from Hammond, Gerald B
Lewis acid or Brønsted acid-catalyzed alkyne–carbonyl metathesis and a proposed [2 + 2] intermediat...
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Gold-catalyzed cyclization of internal alkynyl ketones.
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Proposed [2 + 2] mechanism for the cyclization of alkynyl ketones.
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Gold-catalyzed cyclization of terminal alkynyl ketones.
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Gold-catalyzed tandem oxygen transfer/Nazarov cyclizations.
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TfOH-mediated cyclization of alkynyl ketones.
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Gold-catalyzed cyclizations of 2-alkynyl-1,5-diketones.
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Designed isotopic labeling experiment for mechanistic studies.
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18O isotopic experiments.
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B2PLYP/6-311+G(d,p)//B2PLYP/6-31G(d) computed reaction profile, relative energies in kcal/mol.
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Gold-catalyzed cyclization of tethered alkynyl arylaldehydes.
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Gold-catalyzed cyclization of terminal diynes.
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Proposed hydrolysis/cyclization mechanism.
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Gold-catalyzed cyclization of internal diynes.
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Proposed solvolysis/cyclization mechanism.
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Gold-catalyzed cyclization of alkynyl epoxides and the 18O isotopic labeling experiment.
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Proposed oxygen transfer mechanism.
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Gold or silver-catalyzed cyclization of alkynyl epoxides and the corresponding deuterium labeling e...
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Beilstein J. Org. Chem. 2011, 7, 606–614, doi:10.3762/bjoc.7.71
Diels–Alder reaction of diene 2 with 4 and 6. aThe other isomers of 7a and 7b were isolated in 8% a...
Synthetic concept toward multi-substituted gem-difluoroisoquinolinones.
Comparison of coupling constant of vinyl protons.
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Diels–Alder reaction with 9 and 6. aCombined yield of two isomers.
Beilstein J. Org. Chem. 2010, 6, No. 48, doi:10.3762/bjoc.6.48
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