Results 81 to 90 of about 4,131 (247)
Journal of Organic Chemistry, 2021 The three-component reaction of α,β-unsaturated N-arylaldimines, dialkyl but-2-ynedioates, and 2-arylidene Meldrum acids in DCM at room temperature gave mixtures of cis/trans-11-aryl-7-styryl-2,4-dioxa-8-azaspiro[5.5]undec-9-enes in satisfactory yields ...
Dan Liu +4 more
semanticscholar +1 more source
Polyfunctionality and inflectional economy
Linguistic Issues in Language Technology, 2014 This paper serves two purposes. It is a summary of much work concerning One compelling kind of evidence for the autonomy of a language’s morphology is the incidence of inflectional polyfunctionality, the systematic use of the same morphology to express distinct but related morphosyntactic content.
openaire +2 more sources
Fujiwara-Moritani reaction: challenges and new opportunities
Tetrahedron ChemFujiwara-Moritani reaction has proven to be robust for the efficient construction of polyfunctionalized olefins and cyclic skeletons. Recent advances toward greener systems, compatibility with strongly coordinating heterocycle substrates and sterically ...
Xiaojian Chen +5 more
doaj +1 more source
Regioselective reactions of 3,4-pyridynes enabled by the aryne distortion model. [PDF]
, 2013 The pyridine heterocycle continues to play a vital role in the development of human medicines. More than 100 currently marketed drugs contain this privileged unit, which remains highly sought after synthetically. We report an efficient means to access di-
Garg, Neil K, Goetz, Adam E
core
Distributions of geohopanoids in peat: Implications for the use of hopanoid-based proxies in natural archives [PDF]
, 2018 This is the final version of the article. Available from Elsevier via the DOI in this record.Hopanoids are pentacyclic triterpenoids produced by a wide range of bacteria.
Evershed, RP +6 more
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New Piperazine Derivatives Synthesized from Thio-Substituted Polyhalogeno-2-nitro-1,3-butadienes
E-Journal of Chemistry, 2010 It is known that polyhalogeno-nitro-1,3-butadienes are important starting materials for the synthesis of polyfunctionalized bioactive heterocycles.
S. Goksin Aydinli, Cemil Ibis
doaj +1 more source
Beilstein Journal of Organic Chemistry, 2020 β-Nitrostyrenes underwent a Diels–Alder reaction with Danishefsky’s diene to afford cyclohexenes together with the corresponding hydrolyzed products, 3-arylated-5-methoxy-4-nitrocyclohexanones.
Haruyasu Asahara +2 more
doaj +1 more source
CCS Chemistry, 2020 An enantioselective three-component propargyloxylation reaction of propargyl alcohols, pyridotriazoles, and imines has been realized by cooperative catalysis with dirhodium complex and chiral phosp...
Xinxin Lv +6 more
semanticscholar +1 more source
Systemic polyfunctionality and morphology–syntax interdependencies
, 2017 Abstract The chapter examines classes of grammatical markers that can serve more than one function, polyfunctional markers, spoiling the one-to-one form and function relation which is what morphology tends to do. There are areas of the grammar more prone to this behaviour suggesting that there may be at work principles of morphological ...
Ackerman, Farrell, Bonami, Olivier
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The Chemical Record, Volume 25, Issue 12, December 2025.Systematic overview of pyrazole functionalization reactions from C‐5 to N−H. It covers different strategies, from traditional cross‐coupling of prefunctionalized pyrazoles to more efficient direct functionalizations. This review briefly and systematically overviews C–H and N–H functionalization reactions of pyrazoles, aimed at creating new CC and C ...
Karolina Dzedulionytė Müldür +3 more
wiley +1 more source