regioselectivity In A Sentence

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• The better separability is a good advantage for immobilization of molecular catalysts. The immobilized systems have an improved activity and regioselectivity compared to the homogeneous system.
• High regioselectivity is obtained with unsymmetrical alkenes with a preference for a 1, 2-relation of the ether group with the electron-deficient alkene-carbon.
• The main goal of modern nitration chemistry is to establish new methods for increasing regioselectivity of aromatics nitration in order to meet desirable environments.
• Optically active tryptophan which adheres to the regioselectivity of the Larock indole synthesis can also be synthesized using o-iodoaniline with propargyl substituted bislactim ethyl ether.
• Therefore, regioselectivity is governed by the atoms that bear the largest orbital HOMO and LUMO coefficients.
• The regioselectivity and site selectivity of above cycloadditions can be elucidated by FMO theory.
• Its catalytic performance for Heck arylation of acrylic acid with iodobenzene shows that the catalyst has high catalytic activity and regioselectivity for the synthesis of trans-phenylacrylic acid.
• The addition can yield the cis or trans isomer and with unsymmetrical alkynes the organometallic compound can add in two different way thus control of regioselectivity is important.
• However, for alkenyl dipolarophiles, both regioselectivity and stereoselectivity must be considered as sp 3 carbons are generated in the product species.