Results 131 to 140 of about 77,236 (141)

Generation [via Tetradehydro-Diels-Alder Reactions] and Reactivity of 6-Fluorocyclohexa-1,2,4-triene Intermediates. [PDF]

Org Lett
Kevorkian PV, Hoye TR.
europepmc   +1 more source

Dual-Mode Thio-MacMillan Organocatalysts: Stereoselective Diels-Alder Reactions or Sacrificial Self-Cyclization to N-Bridged Bicyclic Lactams. [PDF]

Chemistry
Ebeling MSR, Parziale LV, Sachsenhauser M, Seifert CJB, Kurrle NJ, Trapp O.   +5 more
europepmc   +1 more source

Zwitterionic Pathway in the Diels-Alder Reaction: Solvent and Substituent Effects from ωB97XD/6-311G(d) Calculations. [PDF]

Molecules
Łapczuk A.
europepmc   +1 more source

A Remarkable Selectivity Observed in Hetero-Diels-Alder Reactions of Levoglucosenone (LGO) with Thiochalcones: An Experimental and Computational Study. [PDF]

Molecules
Mlostoń G, Urbaniak K, Palusiak M, Würthwein EU, Reissig HU, Witczak ZJ.   +5 more
europepmc   +1 more source

An Inverse Electron-Demand Diels-Alder Approach to Selective Activity-Based Sensing of Acetaldehyde in Living Cells. [PDF]

J Am Chem Soc
Li Y, Li G, Li EL, Kim J, Chang CJ.
europepmc   +1 more source

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Synthetic studies toward the kempane diterpenes. Diels–Alder additions to bicyclic dienes

Journal of the Chemical Society, Perkin Transactions 1, 2001
Diels–Alder additions of 2,6-dimethyl-p-benzoquinone to the bicyclic dienes 24, 30 and 32 took place with very high regio-, stereo- and facial selectivity. Reduction and then alkylation of a tetracyclic adduct with 1,3-dithienium tetrafluoroborate provided compound 56, which has the correct stereochemistry at three key carbons for elaboration to the ...
Chunjian Liu, Guanglin Bao, D. Jean Burnell   +2 more
openaire   +1 more source

Intramolecular Diels–Alder reactions of N-substituted oxazolones

Chemical Communications, 2002
The first intramolecular Diels-Alder reactions of simple trienes featuring an N-substituted oxazolone as the dienophilic component have been investigated and are reported herein.
Stephen Philip, Fearnley, Eleonora, Market   +1 more
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Stereocontrolled construction of rigid tricyclic bis(α-amino acid) derivatives by Ru(Ii)-catalyzed cascade and Diels–Alder reactions

Journal of the Chemical Society, Perkin Transactions 1, 2001
In the preparation of rigid and annulated tricyclic bis(α-amino acid) derivatives the key construction was effected by a Ru(II)-catalyzed RCM cascade reaction of gem-dienynes. The substrates were available by stepwise and stereocontrolled alkynylations and alkenylations of (2R)-2,5-dihydro-2-isopropyl-3,6-dimethoxypyrazine.
Jon Efskind, Christian Römming, Kjell Undheim   +2 more
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Competing Diels–Alder reactions of activated nitroethylene derivatives and [3,3]-sigmatropic rearrangements of the cycloadducts

Chemical Communications, 2002
AbstractFor Abstract see ChemInform Abstract in Full Text.
Peter A, Wade, James K, Murray, Sharmila, Shah-Patel, Hung T, Le   +3 more
openaire   +2 more sources

1,2,3,5-Tetrahydro-1,2,3-methenopentalene, a Valence Isomer of Isoindene: Synthesis and Diels–Alder Reactions This work was supported by the Fonds der Chemischen Industrie and by Chemetall GmbH. S.E.L. and D.D.P. thank Heriot-Watt University, Edinburgh, and the European Community for an Erasmus exchange scholarship. Dipl.-Chem. Patrick Musch assisted us in the performance of the quantum-chemical calculations.

Angewandte Chemie International Edition, 2002
Thomas Fischer, Ulrike Kunz, Sarah E. Lackie, Carsten Cohrs, Daniel D. Palmer, Manfred Christl   +5 more
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