Nature Communications, 2017 Avenaol is a potent germination stimulant that can be extracted from black oat. Here, the authors report the total synthesis of avenaol by developing a strategy to access all-cis-substituted cyclopropanes.
Motohiro Yasui +3 more
doaj +1 more source
Orientation effects in reactions of allenyl cations with styrene [PDF]
, 1979 Allenyl cations, generated from allenyl or alkynyl halides and Ag+, attack styrene at the side chain or at the aromatic nucleus. The allenyl/alkynyl product ratio is dependent on the structure of the precursor halide except for highly substituted ...
Bertrand +13 more
core +1 more source
Enantiopure Chiral Crystals: A Powerful Tool for Absolute Asymmetric Synthesis
Asian Journal of Organic Chemistry, EarlyView.This review covers absolute asymmetric syntheses, which allow the preparation of enantiomerically enriched chiral compounds from achiral precursors. By exploiting the crystallization of certain compounds as a conglomerate, enantiopure chiral crystals are spontaneously obtained.
Jiacheng Li, Valérie Alezra
wiley +1 more source
Nature Communications, 2017 Chiral spirocyclic compounds are important structural motifs for drug discovery. Here, the authors report a synthetic route to spirocycles based on enantioselective cycloaddition of activated spirocyclopropyl oxindoles, which act as donor-acceptor ...
Peng-Wei Xu +6 more
doaj +1 more source
Types and properties of metal-free catalysts for living polymerizations of biomaterials [PDF]
, 2008 Syntéza biokompatibilních a biodegradabilních polyesterů, použitelných převážně v medicíně, využívá pro polymeraci za otevření kruhu katalyzátory na bázi kovu (např. Sn, Al atd.), které se mohou po implantaci deponovat v těle.
Repka, Martin
core
Organocatalytically Generated Donor − Acceptor Cyclopropanes in Domino Reactions. One-Step Enantioselective Synthesis of Pyrrolo[1,2 ‑ a ]quinolines [PDF]
, 2016 An easy and straightforward procedure has been developed for the synthesis of highly enantioenriched pyrrolo-[1,2-a]quinolines through a one-pot process that comprises a domino cyclopropane ring opening/aza-Michael/aldol reaction followed by acid ...
Carrillo Fernández, María Luisa +5 more
core +2 more sources
Biosynthese des Rotalgen‐Diterpens Peyssonnosol in Bakterien
Angewandte Chemie, EarlyView.Zwei Terpensynthasen aus Anaerolineae‐Bakterien katalysieren die Biosynthese von Peyssonnosen‐artigen Diterpenen aus Rotalgen. Ortsgerichtete Mutagenese ermöglichte einen partiellen Funktionswechsel, der zur Bildung zusätzlicher Nebenprodukte führte.
Zhiyong Yin +10 more
wiley +1 more source
The Oxidative Reaction of Potassium Permanganate with Mycolic Acids Leads to a Unique Diagnostic Pattern for Mycobacterium Tuberculosis [PDF]
, 2008 In an oxidative reaction, potassium permanganate reacts with the mycolic acid component of _M.tuberculosis_ and gives rise to a unique saponified pattern specific for _M.tuberculosis_.
Mohsen khatami
core +1 more source
An Approach to 1,1-Disubstituted Pyrazolylcyclopropane Building Blocks
SynOpen, 2017 An approach to isomeric 1,1-disubstituted pyrazolylcyclopropanes that relies on lithium diisopropylamide (LDA) mediated bis-alkylation of the corresponding pyrazolylacetonitriles is developed.
Pavel S. Nosik +3 more
doaj +1 more source
Synthesis of Cyclopropanes via Organoiron Methodology: Preparation of \u3cem\u3erac\u3c/em\u3e-Dysibetaine Cpa [PDF]
, 2007 The cyclopropane containing betaine, rac-dysibetaine CPa, was prepared from (1-methoxycarbonylpentadienyl)-Fe(CO)2PPh3+ by nucleophilic addition of nitromethane anion followed by oxidatively induced reductive ...
Donaldson, William A. +3 more
core +1 more source