Results 241 to 250 of about 29,422 (294)

Regioselective Carboiodination of Styrenes:N‐Iodosuccinimide Affords Complete Reaction Regioselectivity

open access: yesRegioselective Carboiodination of Styrenes:N‐Iodosuccinimide Affords Complete Reaction Regioselectivity
openaire  

Ziegler–Natta Catalysts: Regioselectivity and “Hydrogen Response”

open access: yesACS Catalysis, 2020
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
exaly   +2 more sources

Regioselective Semihydrogenation of Dienes

The Journal of Organic Chemistry, 2011
A 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, 2011
Dinitrodialkoxybenzene 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, 2021
Reaction 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
openaire   +2 more sources

Regioselective Allylgallation of Terminal Alkynes.

ChemInform, 2005
AbstractFor Abstract see ChemInform Abstract in Full Text.
Phil Ho, Lee   +4 more
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Regioselectivity

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
openaire   +1 more source

Synthesis of Regioselectively Deuterated Cyclopropanes

Synthetic Communications, 1996
Abstract 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
openaire   +2 more sources

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