Results 101 to 110 of about 8,483 (210)
Синтез і хімічні властивості конденсованих та спіросполучених похідних піролу [PDF]
, 2018 У дисертаційній роботі досліджено стереохімію та регіонаправленість фор-мування продуктів у процесах 1,3-диполярного циклоприєднання азометин-ілідів на основі ізатину та циклічних і аліфатичних α-амінокислот до похідних N-заміщених малеїнімідів ...
Павловська, Т.Л.
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Silver and platinum-catalysed addition of O–H and N–H bonds to allenes [PDF]
, 2014 Transition-metal catalysed nucleophile addition to allenes is a very powerful tool for the synthesis of functionalised molecules containing heteroatoms, heterocycles in the intramolecular version, or allyl derivatives in the intermolecular version.
Munoz-Herranz, Maria
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Carbon–Fluorine Bond Formation [PDF]
, 2012 We present a selection of carbon–fluorine bond formations that have been developed in the recent past. An overview of the most common fluorination reagents is followed by fluorination reactions organized by reactivity.
Furuya, Takeru +2 more
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Organocatalytic Asymmetric α-Chlorination of 1,3-Dicarbonyl Compounds Catalyzed by 2-Aminobenzimidazole Derivatives [PDF]
, 2016 Bifunctional chiral 2-aminobenzimidazole derivatives 1 and 2 catalyze the enantioselective stereodivergent α-chlorination of β-ketoesters and 1,3-diketone derivatives with up to 50% ee using N-chlorosuccinimide (NCS) or 2,3,4,4,5,6-hexachloro-2,5 ...
Alonso, Diego A. +2 more
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A general catalytic β-C-H carbonylation of aliphatic amines to β-lactams [PDF]
, 2016 Methods for the synthesis and functionalization of amines are intrinsically important to a variety of chemical applications. We present a general carbon-hydrogen bond activation process that combines readily available aliphatic amines and the feedstock ...
Calleja, J +5 more
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Palladium-Catalyzed One-Pot Approach to 3-(Diarylmethylene)oxindoles from Propiolamidoaryl Triflate
Molecules, 2015 3-(Diarylmethylene)oxindoles have been synthesized from propiolamidoaryl triflate utilizing a palladium-catalyzed one-pot reaction consisting of three successive reactions: Sonogashira, Heck, and Suzuki-Miyaura. This method allows for the production of a
Dahye Lee +4 more
doaj +1 more source
Radical Fluoroalkylation Reactions [PDF]
, 2018 Recent protocols and reactions for catalytic radical perfluoroalkylations will be described. The production of perfluoroalkyl radicals (RF = CnF2n+1, n ≥ 2), which effect both addition and substitution reactions on organic substrates, can be realized ...
Barata Vallejo, Sebastian +2 more
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Organophotocatalytic synthesis of phosphoramidates
, 2016 We describe the use of visible light in conjunction with an organic dye for the synthesis of phosphoramidates. Cross dehydrogenative coupling reactions between phosphites and amines are reported using organic dyes and light as catalysts for the first ...
Hao, Guo +5 more
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Beilstein Journal of Organic Chemistry, 2017 The thiourea-catalyzed asymmetric synthesis of highly enantioenriched spirocyclopentaneoxindoles containing chiral amide functional groups using simple 3-substituted oxindoles and nitrovinylacetamide as starting materials was achieved successfully.
Yonglei Du +5 more
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7-Methyl-5-[(4-methylbenzene)sulfonyl]-2H,5H-[1,3]dioxolo[4,5-f]indole: crystal structure and Hirshfeld analysis [PDF]
, 2018 In the title indole derivative, C17H15NO4S, the fused dioxolo-indole system is essentially planar [r.m.s. deviation of the 12 fitted atoms = 0.0249 A ˚ ] and is effectively perpendicular to the appended 4-tolyl ring, forming a dihedral angle of 89.95 (6).
Ali, Akbar +4 more
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