- Functional norbornanyl ester derivatives, polymers and process for preparing same
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This invention relates to the new functional norbornanyl ester derivative and/or polymer compositions which are easily obtainable by reacting the Diels-Alder adduct of appropriate dienes and dienophiles with carboxylic acids. In particular, this invention relates to a new process for making cyclic chemical raw materials suitable for production coating, ink, adhesive, plasticizer, thermoplastic or thermosetting plastic and functional polymers.
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Paragraph 0194
(2013/12/04)
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- Enantioselective diels-alder reactions with anomalous endo/exo selectivities using conformationally flexible chiral supramolecular catalysts
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Swapped selectivities: The use of tailor-made catalysts results in anomalous endo/exo selectivities and high enantioselectivities in the Diels-Alder reactions of cyclopentadiene with different acroleins (see scheme). These supramolecular catalysts are prepared in situ from chiral diols, arylboronic acid, and tris(pentafluorophenyl)borane, and can discriminate the re/si face of the dienophile as well as the endo/exo approach of the diene.
- Hatano, Manabu,Mizuno, Tomokazu,Izumiseki, Atsuto,Usami, Ryota,Asai, Takafumi,Akakura, Matsujiro,Ishihara, Kazuaki
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supporting information; experimental part
p. 12189 - 12192
(2012/02/01)
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- Synthesis of a 1,3-spiro-amino-alcohol-derived chiral auxiliary and its application to Diels-Alder reactions
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A short synthesis and resolution of (1R,5R,6R)-6-aminospiro[4.4]nonan-1-ol, 11, is reported. The pivalamide derivative (+)-5 gives excellent diastereo- and regiocontrol as well as endo selectivity as a chiral auxiliary in the BCl3-catalyzed Die
- Lait, Susan M.,Parvez, Masood,Keay, Brian A.
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p. 749 - 756
(2007/10/03)
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- Asymmetric Hetero Diels-Alder Reaction Catalyzed by Stable and Easily Prepared CAB Catalysts
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A stable chiral (acyloxy)borane (CAB) complex is prepared in situ by mixing tartaric acid derivative and arylboric acid at room temperature.A solution of the catalyst is effective to catalyze hetero Diels-Alder reaction to produce dihydropyrone derivative
- Gao, Qingzhi,Maruyama, Tohru,Mouri, Makoto,Yamamoto, Hisashi
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p. 1951 - 1952
(2007/10/02)
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- Acyloxyborane: An Activating Device for Carboxylic Acids
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We chose α,β-unsaturated acids and investigated the reactivity of their borane adducts in Diels-Alder reactions.The reaction did proceed smoothly and has been found to be a useful method for synthesis of carboxylic acids.
- Furuta, Kyoji,Miwa, Yoshikazu,Iwanaga, Kiyoshi,Yamamoto, Hisashi
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p. 6254 - 6255
(2007/10/02)
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