Results 71 to 80 of about 9,019 (233)
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
The continuing significance of chiral agrochemicals
Pest Management Science, Volume 81, Issue 4, Page 1697-1716, April 2025.In the time frame 2018–2023, around 43% of the 35 chiral agrochemicals introduced to the market (herbicides, fungicides, insecticides, acaricides, and nematicides) contain one or more stereogenic centers in the molecule, and almost 69% of them have been marketed as racemic mixtures of enantiomers or stereoisomers.
Peter Jeschke
wiley +1 more source
Homohalocyclization: Electrophilic Bromine-Induced Cyclizations of Cyclopropanes
, 2016 An efficient method for the halocyclization of cyclopropanes has been developed. The cyclopropanes undergo a 1,3-addition reaction to form homohalocyclization products compared to conventional alkene halocyclizations.
Christian Rösner (1668952) +1 more
core +1 more source
New Phytologist, EarlyView.MtSymCRK–MtGRF8‐14‐3‐3a, e, h and i functional model in R‐108 nodules. Summary In Medicago littoralis R‐108, Symbiotic CYSTEINE‐RICH RECEPTOR‐LIKE KINASE (MtSymCRK) is required to prevent defense reactions in symbiotic nodules during chronic infection.
Chaoyan Yin +9 more
wiley +1 more source
General Catalytic Enantioselective Access to Monohalomethyl and Trifluoromethyl Cyclopropanes
, 2018 International audienceAn efficient catalytic enantioselective access to chiral functionalized trifluoromethyl cyclopropanes from two classes of diazo compounds and α‐trifluoromethyl styrenes using Rh2((S)‐BTPCP)4 as a catalyst is described.
Poisson, Thomas +11 more
core +1 more source
Nature Communications, 2018 Synthesis of cyclopropanes bearing vicinal all-carbon quaternary stereocenters poses synthetic challenges. Here, the authors report an intramolecular radical cyclopropanation with a copper/amine cooperative catalytic system for the efficient construction
Liu Ye +5 more
doaj +1 more source
Synthesis of organic liquid crystals containing selectively fluorinated cyclopropanes
Beilstein Journal of Organic Chemistry, 2020 This paper describes the synthesis of a series of organic liquid crystals (LCs) containing selectively fluorinated cyclopropanes at their termini. The syntheses used difluorocarbene additions to olefin precursors, an approach which proved straightforward
Zeguo Fang +5 more
doaj +1 more source
Plant Biotechnology Journal, EarlyView.ABSTRACT Endogenous H2O2 participated in the ethylene‐dependent ripening and senescence process of horticultural fruit as a secondary messenger; however, the molecular mechanism beneath such a phenomenon has not been fully clarified until recently. By a conjoint analysis of metabolite, enzyme activities, gene expression profiles in AsA‐GSH cycle of ...
Libin Wang +12 more
wiley +1 more source
Allylation of Donor−Acceptor Cyclopropanes
, 2016 Direct allylation of glycal-derived donor−acceptor cyclopropanes has been achieved with TiCl4 activation followed by addition of allyltrimethylsilane. The α diastereomer is the major product, with selectivities ranging from 3:1 to 10:1 and yields around ...
Ming Yu (78996) +1 more
core +2 more sources
Advanced Science(Difluoromethylated cyclopropane represents an important motif, which is widely found in bioactive and functional molecules. Despite significant progress in modern chemistry, the atom‐economic and enantioselective synthesis of difluoromethylated ...
Chuntao Wang +3 more
doaj +1 more source