Results 51 to 60 of about 27,319 (289)
Stereoselectivity in Atmospheric Autoxidation [PDF]
The Journal of Physical Chemistry Letters, 2019 We show that the diastereomers of hydroxy peroxy radicals formed from OH and O2 addition to C2 and C3, respectively, of crotonaldehyde (CH3CHCHCHO) undergo gas-phase unimolecular aldehydic hydrogen shift (H-shift) chemistry with rate coefficients that differ by an order of magnitude. The stereospecificity observed here for crotonaldehyde is general and
Kristian H. Møller +5 more
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Diastereo- and enantioselective preparation of cyclopropanol derivatives
Beilstein Journal of Organic Chemistry, 2019 The diastereoselective carbocupration reaction of alkoxy-functionalized cyclopropene derivatives, followed by a subsequent trapping of the resulting cyclopropylmetal species with an electrophilic source of oxygen (oxenoid) afforded various ...
Marwan Simaan, Ilan Marek
doaj +1 more source
(Z)-Selective Takai olefination of salicylaldehydes
Beilstein Journal of Organic Chemistry, 2017 The Takai olefination (or Takai reaction) is a method for the conversion of aldehydes to vinyl iodides, and has seen widespread implementation in organic synthesis. The reaction is usually noted for its high (E)-selectivity; however, herein we report the
Stephen M. Geddis +5 more
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Mechanistic study of stereoselectivity in azoalkane denitrogenations
, 2017 Since 1965, the stereoselectivity in azoalkane denitrogenation has attracted much attention in both synthetic organic chemistry and physical organic chemistry.
Manabu Abe, Sayaka Hatano
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Angewandte Chemie, EarlyView.This review highlights recent advances in integrating biocatalysis and chemocatalysis in continuous flow to create streamlined, sustainable processes. It examines chemo‐enzymatic cascades combining at least one enzymatic and one chemical step, discusses challenges such as enzyme immobilization, leaching, and reactor clogging, and presents solutions ...
Petros Siasiaridis +2 more
wiley +2 more sources
ARO-The Scientific Journal of Koya University, 2019 [4+2] cycloaddition reaction has enormous significant in organic chemistry synthesis reactions and yet remains unexplored for the synthesis of fluorine-containing compounds.
Haydar A. Mohammad-Salim +1 more
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Stereosopecificity in [Co(sep)][Co(edta)]Cl2·2H2O
Chemistry, 2021 The X-ray structure of racemic [Co(sep)][Co(edta)]Cl2·2H2O is reported and reveals hetero-chiral stereospecificity in the interactions of [Co(sep)]3+ with [Co(edta)]−.
Peter Osvath +2 more
doaj +1 more source
Stereoselectivity of BChE and AChE.
, 2018 Stereoselectivity of BChE and AChE.
Tamara Šmidlehner (5824283) +5 more
core +1 more source
On the stereoselective synthesis of estrone
Tetrahedron Letters, 1960 By application of the Robinson-Mannich reaction 6-p-anisyl-2-oxocyclohex-6-ene-1-acetic acid (VIa); 6-p-anisyl-2-oxo-3-methylcyclohex-6-ene-1-acetic acid (VIb), and the corresponding 3-alkoxycarbonyI deri-vatives (VIc, d, e, and f) have been prepared.
Banerjee, DK, Sivanandaiah, KM
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Stereoselective Synthesis of Baulamycin A
The Journal of Organic Chemistry, 2020 New structural classes of antibiotics are rare, structurally novel broad-spectrum antibiotics exceptionally so. The recently discovered baulamycins constitute a remarkable example of these highly prized compounds and, as such, have attracted considerable attention in the form of both synthetic efforts and biological studies.
Jonathan R. Thielman +2 more
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