Results 51 to 60 of about 6,329 (228)
Ring Formation in Sesquiterpene Synthesis: Biomimetic vs. Non‐Biomimetic Strategies
European Journal of Organic Chemistry, EarlyView.A short review of cyclase enzyme‐mediated ring formation in sesquiterpene biosynthesis is presented as a prelude to six case studies examining the merits and demerits of biomimetic vs. non‐biomimetic strategies for carbocyclisation in the total synthesis of this iconic natural product class.
Bohan Lin, Chen Dai, Alan C. Spivey
wiley +1 more source
Metal-Bound or Free Ylides as Reaction Intermediates in Metal-Catalyzed [2,3]-Sigmatropic Rearrangements? It Depends. [PDF]
, 2020 Croix J. Laconsay, Dean J. Tantillo
openalex +2 more sources
Angewandte Chemie, Volume 137, Issue 45, November 3, 2025.DFT calculations of the 8π‐electrocyclization of 1,2‐bis(diazo)alkanes and of other bis‐1,3‐dipoles reveal that this process can establish a so far ignored route to heterocycles such as 1,2,3,4‐tetrazines. Alternative reaction channels via carbenes or nitrenes leading to fragmentation products are discussed.
Hans‐Ulrich Reissig +1 more
wiley +2 more sources
New chemistry of diazafulvenium methides: one way to pyrazoles [PDF]
, 2006 Diazafulvenium methides generated from the solution pyrolysis of pyrazolo[1,5-c][1,3]thiazole-2,2-dioxides participate in [8[pi]+2[pi]] cycloadditions giving pyrazolo[1,5-a]pyridine derivatives.
Gonsalves, António M. d'A. Rocha +2 more
core +1 more source
Group 13 Decamethylmetallocenium Cations [PDF]
, 2007 Salts containing the decamethylmetallocenium cations, [( C5Me5) M-2](+) ( or Cp*M-2(+)) of the group 13 "metals" B, Al and Ga have been prepared using a variety of synthetic routes.
Cowley, Alan H. +4 more
core +1 more source
Conjugated Inorganic–Organic Hybrid Polymers with p‐Block Elements
Angewandte Chemie International Edition, Volume 65, Issue 2, 9 January 2026.The influence of various p‐block element motifs on the photophysical properties of conjugated inorganic‐organic hybrid polymers is surveyed regarding applications in organic electronics. Recent advances in the use of heavier elements as well as heavier multiple bonds and the development of diverse (post‐)functionalization strategies suggest ample scope
Anna‐Lena Thömmes +1 more
wiley +1 more source
Photochemical Approaches to Complex Chemotypes: Applications in Natural Product Synthesis. [PDF]
, 2016 The use of photochemical transformations is a powerful strategy that allows for the formation of a high degree of molecular complexity from relatively simple building blocks in a single step. A central feature of all light-promoted transformations is the
Kärkäs, Markus D. +2 more
core +2 more sources
Advanced Synthesis &Catalysis, Volume 368, Issue 2, January 2026.A rhodium(II)‐catalyzed ring expansion of stereodefined dihydro‐1,3‐thiazines with diazomalonates gives 1,4‐thiazepines via a sulfonium ylide rearrangement. The reaction shows a cis/trans reactivity divergence arising from different metal coordination, as revealed by experiments and density functional theory studies.
Laurine Tual +3 more
wiley +1 more source
ChemistryEurope, Volume 4, Issue 1, January 2026.A small library of tricyclic natural product‐like molecules with quaternary stereocenters is rapidly synthesized. An excellent chirality transfer from sulfur to carbon atom is observed, furnishing the desired products in 90–99% enantiomeric excesses and 51–78% isolated yields.
Weiping Zhou +2 more
wiley +1 more source
Microwave-assisted generation and reactivity of aza- and diazafulvenium methides: heterocycles via pericyclic reactions [PDF]
, 2008 Azafulvenium methides and diazafulvenium methides have been generated under microwave irradiation from 2,2-dioxo-1H,3H-pyrrolo[1,2-c]thiazoles and 2,2-dioxo-1H,3H-pyrazolo[1,5-c]thiazoles, respectively.
Melo, Teresa M. V. D. Pinho e +1 more
core +1 more source