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Ziegler–Natta Catalysts: Regioselectivity and “Hydrogen Response”
Advanced High Throughput Experimentation (HTE) methods were applied to quantify the regioselectivity and the so-called "hydrogen response" in propene polymerization of four Ziegler-Natta catalysts representative of the three latest industrial generations
Antonio Vittoria +2 more
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Regioselective Semihydrogenation of Dienes
The Journal of Organic Chemistry, 2011A one-pot, three-step strategy for the regioselective semihydrogenation of dienes is described. This procedure uses 9-BBN-H as a temporary protective group for alkenes. Yields range from 55% to 95%, and the reaction is tolerant of a variety of common functional groups.
Thomas J A, Graham +3 more
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Regioselective Allylzincation of Alkenylboronate
Organic Letters, 2001[reaction: see text] Boryl substitution on an olefin activates the olefinic double bond toward addition of an organozinc reagent. Addition of an allylic zinc reagent to an alkenylboronate thus takes place smoothly to afford a variety of gem-zincio/boryl species.
M, Nakamura +3 more
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Regioselectivity in the Nitration of Dialkoxybenzenes
The Journal of Organic Chemistry, 2011Dinitrodialkoxybenzene derivatives are important precursors for Schiff base macrocycles and a variety of other molecules. During our investigations, we have found that the dinitration reaction of 1,2-dialkoxybenzenes proceeds with unusual regioselectivity, giving exclusively the desired 1,2-dialkoxy-4,5-dinitrobenzene product, but we have been unable ...
Kevin, Shopsowitz +2 more
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Regioselective Synthesis of Benzofuranones and Benzofurans
The Journal of Organic Chemistry, 2021Reaction of 3-hydroxy-2-pyrones with nitroalkenes bearing ester groups gives benzofuranones. The reaction allows regioselective preparation of the benzofuranones with programmable substitution at any position. Complex substitution patterns are readily created. The substituted benzofuranones can be converted to substituted benzofurans.
Xiaojie Zhang, Christopher M. Beaudry
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Regioselective Allylgallation of Terminal Alkynes.
ChemInform, 2005AbstractFor Abstract see ChemInform Abstract in Full Text.
Phil Ho, Lee +4 more
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2012
This chapter explores regioselectivity. Chemoselectivity means that there are two separate functional groups and that a reagent must choose between them. By contrast, regioselectivity implies that there is one functional group that can react in two different places and a reagent must choose where to react.
Jonathan Clayden +2 more
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This chapter explores regioselectivity. Chemoselectivity means that there are two separate functional groups and that a reagent must choose between them. By contrast, regioselectivity implies that there is one functional group that can react in two different places and a reagent must choose where to react.
Jonathan Clayden +2 more
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Synthesis of Regioselectively Deuterated Cyclopropanes
Synthetic Communications, 1996Abstract A regioselective synthesis of deuterated aliphatic cyclopropanes has been developed to furnish labeled substrates for gas-phase ion-molecule reaction studies.
Duffault, J.M. +3 more
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