Results 61 to 70 of about 3,742 (239)
CHIMIA, 1985 Hexane suspensions of trimethylsilylmethylpotassium or butyllithium/potassium tert-butoxide deprotonate 1-methyl-cyclohexene almost exclusively at the methyl group.
Etienne Moret +4 more
doaj +1 more source
, 2018 Rh(III)-catalyzed cascade C–H activation of benzoylacetonitriles and annulation with sulfoxonium ylides was realized, leading to selective synthesis of naphthols, 2,3-dihydronaphtho[1,8-bc]pyrans, and naphtho[1,8-bc]pyrans.
Panjie Hu (3902923) +5 more
core +1 more source
Animal Research and One Health, EarlyView.Dietary A. truncatum leaf extract is absorbed and improves laying performance in aged hens by enhancing systemic antioxidant capacity and modulating the gut microbiota. ABSTRACT The demand for natural feed additives is considerably increasing in the antibiotic‐free feed era.
Kailong Qin +6 more
wiley +1 more source
Copper-catalysed asymmetric allylic alkylation of alkylzirconocenes to racemic 3,6-dihydro-2H-pyrans
Beilstein Journal of Organic Chemistry, 2015 Asymmetric allylic alkylation is a powerful reaction that allows the enantioselective formation of C–C bonds. Here we describe the asymmetric alkylation of alkylzirconium species to racemic 3,6-dihydro-2H-pyrans.
Emeline Rideau, Stephen P. Fletcher
doaj +1 more source
, 2018 Rh(III)-catalyzed cascade C-H activation of benzoylacetonitriles and annulation with sulfoxonium ylides was realized, leading to selective synthesis of naphthols, 2,3-dihydronaphtho[1,8-bc]pyrans, and naphtho[1,8-bc]pyrans.
Yang, Shuang +11 more
core +1 more source
Accelerating green heterocyclic synthesis: Convergence of AI, automation, and sustainable chemistry
Bulletin of the Korean Chemical Society, EarlyView.Green heterocyclic synthesis and data‐driven tools such as AI, high‐throughput experimentation, continuous flow, and self‐driving laboratories have developed largely in parallel. This review connects them and asks how green metrics such as E‐factor and PMI might serve as explicit optimization targets rather than post‐hoc measures, toward sustainable ...
Noor Aisyah Ahmad Shah +8 more
wiley +1 more source
Bulletin of the Korean Chemical Society, EarlyView.Abstract DNA‐encoded libraries (DELs) enable large‐scale screening for hit identification, but accessing sp3‐rich, three‐dimensional chemotypes beyond flat, aromatic scaffolds remains challenging. Multicomponent reactions (MCRs) assemble such complexity from simple building blocks in a single step, and reaction‐engineering strategies have extended on ...
Jimin Moon +3 more
wiley +1 more source
, 2019 The practical use of 2,2-dimethyl-2H-pyrans as electron-rich dienes in sequential Diels–Alder/retro-Diels–Alder (DA/rDA) domino processes to generate aromatic platforms has been demonstrated.
Fernando García-Tellado (1724857) +4 more
core +1 more source
N‐Sulfonyl Azalevoglucosan: A Versatile Platform for the Synthesis of Polysubstituted Piperidines
Chemistry – A European Journal, EarlyView.Gain by strain: The synthesis of a levoglucosan analog, in which the pyranose oxygen has been replaced by a nitrogen, allows navigation on the piperidine ring to iteratively install functional groups at C1, C2, C3, C4, and C6 positions using simple experimental protocols with minimal protecting group manipulation.
Dylan Yorga +6 more
wiley +1 more source
Synthesis of Pyran and Pyranone Natural Products [PDF]
Molecules, 2004 An overview of the synthesis of the fungal metabolites (+)-dermolactone, (–)- semixanthomegnin, (+)- and (–)-mellein, (–)-ochratoxin α, (–)-(1R,3S)-thysanone, the enantiopure ventiloquinones L, E and G, and 8-desmethyleleutherin from a common chiral intermediate, is presented. Further methodology leading potentially toward extended quinones such as (3S,
Donner, Christopher D. +2 more
openaire +4 more sources