Results 111 to 120 of about 8,483 (210)
Auxin activity of 3-hydroxymethyl oxindole and 3-methylene oxindole in oat
Biologia Plantarum, 1986 Two photooxidation products of indol-3-ylacetic acid (IAA), 3-hydroxymethyl oxindole (HMO) and 3-methylene oxindole (Meox) were almost as effective as IAA in stimulation of growth of oat (Avena saliva cv. Kent) coleoptile sections. The IAA failed to give stimulation of growth after pretreatment of the coleoptiles with chemicals inhibiting oxidation of ...
R. N. Bhattacharyya +2 more
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Asymmetric α-amination of 3-substituted oxindoles using chiral bifunctional phosphine catalysts
Beilstein Journal of Organic Chemistry, 2016 A highly enantioselective α-amination of 3-substituted oxindoles with azodicarboxylates catalyzed by amino acids-derived chiral phosphine catalysts is reported. The corresponding products containing a tetrasubstituted carbon center attached to a nitrogen
Qiao-Wen Jin +4 more
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Beilstein Journal of Organic Chemistry, 2012 We reported the first example of organocatalytic Michael addition of unprotected 3-prochiral oxindoles 1 to 1,4-naphthoquinone. Quinidine derivative (DHQD)2PYR was found to be able to catalyze this reaction in up to 83% ee, with moderate to excellent ...
Jin-Sheng Yu +3 more
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MoleculesIsatin-derived spirocyclic cores are found in several biologically active molecules. Here, we report nucleophilic domino reactions for the synthesis of α-methylene-γ-butyrolactone/lactam containing spirocyclic oxindoles. The Zn-mediated one-step reaction
Prathap Reddy Mukthapuram +1 more
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Facile synthesis of functionalized spiro[indoline-3,2'-oxiran]-2-ones by Darzens reaction
Beilstein Journal of Organic Chemistry, 2013 A series of functionalized spiro[indoline-3,2'-oxiran]-2-ones was efficiently synthesized by Darzens reaction of phenacyl bromides with isatins both with N-alkyl groups and without N-substituent in the presence of potassium carbonate as a base catalyst ...
Qin Fu, Chao-Guo Yan
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Photoactivatable fluorophores are essential tools for studying the dynamic molecular interactions within important biological systems with high spatiotemporal resolution.
core
Oxindoles. V. Selective Solvolysis Reactions of Oxindole-Spirodimer
YAKUGAKU ZASSHI, 1985 YOSHIKAZU KONDO +2 more
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Palladium-Catalyzed Construction of Quaternary Stereocenters by Enantioselective Arylation of γ-Lactams with Aryl Chlorides and Bromides [PDF]
, 2019 Herein, we report the first Pd‐catalyzed enantioselective arylation of α‐substituted γ‐lactams. Two sets of conditions were developed for this transformation, allowing for the use of either aryl chlorides or bromides as electrophiles.
Bachman, Shoshana +7 more
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