Exo-Selective and Enantioselective Photoenolization/Diels-Alder Reaction.
Sign Up to like & getrecommendations! Published in 2021 at "Organic letters"
DOI: 10.1021/acs.orglett.1c02719
Abstract: An unusual exo-selective photoenolization/Diels-Alder reaction of electron-rich 2-methylbenzaldehydes and dienophiles containing a benzoyl group at its α position was reported herein. The chiral TADDOL-type ligand plays a key role in this process: (1) accelerating the… read more here.
Keywords: diels alder; reaction; exo selective; photoenolization diels ... See more keywords
Exo-selective, Reductive Heck Derived Polynorbornenes with Enhanced Molecular Weights, Yields, and Hydrocarbon Gas Transport Properties
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DOI: 10.1021/acsmacrolett.0c00555
Abstract: Next-generation membranes use highly engineered polymeric structures with enhanced chain rigidity, yet difficulties in polymerization often limit molecular weights required for film formation. Addi... read more here.
Keywords: molecular weights; reductive heck; heck derived; derived polynorbornenes ... See more keywords
Janus Face of the Steric Effect in a Lewis Acid Catalyst with Size-Exclusion Design: Steric Repulsion and Steric Attraction in the Catalytic Exo-Selective Diels–Alder Reaction
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DOI: 10.1021/acssuschemeng.8b02099
Abstract: An exo-selective catalytic Diels–Alder reaction was developed using a Lewis acid catalyst with size-exclusion structural design. Exploiting the steric effect, especially the steric attraction, the Lewis acid catalyst was able to reroute the reaction along… read more here.
Keywords: lewis acid; diels alder; acid catalyst; reaction ... See more keywords
Organobase catalysed one-pot exo-selective synthesis of meso-spiro[cyclohexanone-pyrandione] derivatives
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DOI: 10.1039/c7nj02168b
Abstract: An exo-selective one-pot synthesis of novel spiro[cyclohexanone-pyrandione] derivatives through two sequential organobase-catalysed 1,4-conjugate additions of pyran-2,4-dione precursors on diarylideneacetone derivatives is described. The resulting 7,11-diaryl-2-oxaspiro[5.5]undec-3-ene-1,5,9-triones were obtained as a 2 : 1 mixture of exo- and endo-diastereomers… read more here.
Keywords: spiro cyclohexanone; cyclohexanone pyrandione; exo selective;