- Chemoselective, Stereospecific, and Living Polymerization of Polar Divinyl Monomers by Chiral Zirconocenium Catalysts
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This contribution reports the first chemoselective, stereospecific, and living polymerization of polar divinyl monomers, enabled by chiral ansa-zirconocenium catalysts through an enantiomorphic-site controlled coordination-addition polymerization mechanis
- Vidal, Fernando,Gowda, Ravikumar R.,Chen, Eugene Y.-X.
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- Potassium Base-Catalyzed Michael Additions of Allylic Alcohols to α,β-Unsaturated Amides: Scope and Mechanistic Insights
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We report herein the first KHMDS-catalyzed Michael additions of allylic alcohols to α,β-unsaturated amides through allylic isomerization. The reaction proceeds smoothly in the presence of only 5 mol% of KHMDS to afford a variety of 1,5-ketoamides in high yields. Mechanistic investigations, including experimental and computational studies, reveal that the KHMDS-catalyzed in-situ generation of the enolate from the allylic alcohol through a tunneling-assisted 1,2-hydride shift is the key to the success of this transformation. (Figure presented.).
- Kurouchi, Hiroaki,Sai, Masahiro
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supporting information
p. 3585 - 3591
(2021/06/27)
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- Polymerizable compound, ink cartridge containing ink including the polymerizable compound, inkjet recording apparatus using the ink cartridge, and print formed by ink including the polymerizable compound
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A polymerizable compound is provided. The polymerizable compound has two or more polymerizable functional groups in a molecule thereof, wherein one of the two or more polymerizable functional groups of the polymerizable compound is an acrylamide group having the below-mentioned formula (1). The polymerizable compound can be preferably used for inkjet ink.
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Paragraph 0126
(2014/05/20)
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- DENTAL COMPOSITION
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Dental composition comprising a polymerizable compound of the following formula (I):A-L(B) wherein A, L, B, and n are as defined in claim 1.
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Page/Page column 24; 25
(2014/04/03)
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- Dental composition
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Dental composition comprising a polymerizable compound of the following formula (I): ???????? A-L(B)n?????(I) wherein A, L, B, and n are as defined in claim 1.
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Paragraph 0087-0088
(2014/03/25)
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- Mild stereoselective hydrohalogenation leading to (Z)-halopropenamides at room temperature
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Hydroiodination of 2-propynamides leading stereoselectively to (Z)-iodopropenamides was achieved under mild conditions at room temperature by the combined use of zinc iodide and tert-butyl iodide. Similarly, the use of zinc bromide in the presence of tert
- Feray, Laurence,Perfetti, Patricia,Bertrand, Michèle P.
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scheme or table
p. 89 - 91
(2009/05/30)
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- Radical Cyclisation in Heterocycle Synthesis. Part 1. Sulfanyl Radical Addition-Cyclisation of Dienylamides for Lactam Synthesis
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A new method for the synthesis of five- to eight-membered lactams by sulfanyl radical mediated-cyclisation of dienylamides is described.The sulfanyl radical addition-cyclisation of the dienylamide 1 was systematically investigated under four different conditions and was found to give the cyclised lactams 2-6 in 54-79percent yield.The stereo- and regio-selectivity of sulfanyl radical addition-cyclisation was established from the preferential formation of the trans-cyclised lactam 3 and also from the substituent effects in the cyclisation of the dienylamides 11-18.The sulfanyl radical mediated addition-cyclisation was successfully applied to the construction of the six- and eight-membered lactams 28a, b.
- Naito, Takeaki,Honda, Yuko,Miyata, Okiko,Ninomiya, Ichiya
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- Chemoselective Ring Construction from Unsymmetrical 1,6-Dienes via Radical Addition of Sulfonyl Halides
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The sulfonyl radical-promoted cyclizations of 1,6-unsymmetrical dienes can be totally chemoselective.The addition of tosyl halides to various 1,6-dienes bearing both a nucleophilic and an electrophilic double bond clearly indicates that this attractive pr
- Riggi, I. De,Gastaldi, S.,Surzur, J.-M.,Bertrand, M. P.,Virgili, Albert
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p. 6118 - 6125
(2007/10/02)
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