Results 61 to 70 of about 1,879 (233)
Chemistry – An Asian Journal, Volume 20, Issue 8, April 17, 2025.In this review, the advancements in the cyclization of 1,3‐enynes to construct structurally diverse heterocyclic and carbocyclic frameworks are portrayed comprehensively. Divergent cyclization protocols along with mechanistic aspects for key transformations are also detailed. Abstract 1,3‐Enynes have demonstrated their utility as valuable precursors to
Akash P. Sakla +4 more
wiley +1 more source
, 2016 An efficient and stereoselective reaction between 3-isothiocyanato oxindoles and isatins/isatinimines has been developed to afford structurally diverse dispiro[oxazolidine-2-thione]bisoxindoles and dispiro[imidazolidine-2-thione]bisoxindoles in excellent
Zhi-Jun Wu (590328) +5 more
core +1 more source
Studies of the thermal rearrangements of dispiro-1,2,4-Trioxanes [PDF]
, 2009 A series of α-alkoxy-3,6-dispiro-1,2,4-trioxanes have been synthesised by acid-catalysed perhydrolyses of α-alkoxy methylenecyclohexane oxides (provides ring A) to give selectively the corresponding 1-hydroperoxy-1-(hydroxymethyl)cyclohexanes followed
Taylor, Benjamin J., Benjamin J. Taylor
core +1 more source
Acta Crystallographica Section E: Crystallographic Communications, 2019 Instances of crystal structures that remain isomorphous in spite of some minor changes in their respective molecules, such as change in a substituent atom/group, can provide insights into the factors that govern crystal packing.
R. Sribala +3 more
doaj +1 more source
Chemistry – A European Journal, Volume 31, Issue 1, January 2, 2025.The dimerization of fluorene based dialkynes into planarized butafulvenes is rediscovered and its scope expanded. The stabilities of the isobenzenes involved in the formation are explored and the often proposed antiaromaticity is investigated for these near planar derivatives. Abstract Butafulvenes, together with pentafulvenes and [3]radialenes, form a
Moritz P. Schuldt +3 more
wiley +1 more source
Photolysis of Dispiro-substituted 3-Thioxo-1-cyclobutanones [PDF]
Bulletin of the Chemical Society of Japan, 1981 Abstract Photolysis of dispiro-substituted 3-thioxo-1-cyclobutanones in dichloromethane or even in methanol gave rise to the photoisomerization to afford thiolactones preferentially.
Koji Kimura +3 more
openaire +1 more source
Heavier Diferrocenylpnictogenium Ions
Chemistry – A European Journal, Volume 31, Issue 1, January 2, 2025.Four shades of pastel: The synthesis, reactivity and in‐depth characterisation of cationic group 15 carbene analogues is reported. Abstract The synthesis, characterization and reactivity of the diferrocenylphosphenium ion [Fc2P]+ was extended to the heavier diferrocenylpnictogenium ions, [Fc2E]+ (E=As, Sb, Bi).
Corina Stoian +6 more
wiley +1 more source
Novel H-Shaped Persistent Architecture Based on a Dispiro Building Block System
, 2016 A novel dispiro building block, dispiro[fluorene-9,5‘(7‘H)-diindeno[2,1-b:1‘,2‘-d]thiophene-7‘,9‘ ‘-fluorene], and its two derivatives, TBP-DSFDITF and TDOF-DSFDITF, were designed and synthesized.
Ling-Hai Xie (1268196) +10 more
core +1 more source
Molecules, 2017 For the first time, arylmethylidene cyclohexanones that are non-symmetrical due to the presence of peripheral substituents were studied in 1,3-dipolar cycloaddition reactions.
Alexander Anis’kov +3 more
doaj +1 more source
Adventures in the Chemistry of Multicomponent and Domino Reactions
European Journal of Organic Chemistry, Volume 27, Issue 24, June 24, 2024.The present article presents a personalized review of multicomponent and domino reactions directed towards the synthesis of complex heterocyclic products. Chemistry includes the combination of Knoevenagel with hetero‐Diels‐Alder reactions, [3+2] cycloadditions and enamine cyclizations.
Peter Langer
wiley +1 more source