Results 271 to 280 of about 157,130 (323)

Stereoselectivity in furfural cation (4+3) cycloadditions [PDF]

open access: yes, 2016
Catak, Saron   +4 more
core   +1 more source

Ring Formation in Sesquiterpene Synthesis: Biomimetic vs. Non‐Biomimetic Strategies

open access: yesEuropean 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

T‐Shaped 8‐Aryl(ethynyl)‐Substituted Psoralens With Tunable Charge‐Transfer Absorption

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
Starting from 8‐methoxypsoralen, new 8‐arylated and 8‐alkynylated psoralen derivatives are accessible by cross‐coupling. These T‐shaped π‐expanded chromophores are luminescent and photophysics reveal a highly polar excited state with tunable charge‐transfer character.
Lena T. Leusch, Thomas J. J. Müller
wiley   +1 more source

Chiral sodium complex-catalyzed asymmetric cascade cycloaddition/hydration/1,2-rearrangement. [PDF]

open access: yesSci Adv
Zhang M   +8 more
europepmc   +1 more source

Electron Donor–Acceptor Complexes Without Preinstalled Sacrificial Leaving Groups: Applications in Synthesis

open access: yesHelvetica Chimica Acta, EarlyView.
Leaving‐group–free electron donor–acceptor (EDA) complexes have emerged as a practical platform for photocatalyst‐free radical generation under visible light. This review highlights recent advances in coupling and cyclization reactions driven by such EDA complexes, emphasizing their atom‐economical and sustainable feature.
Wenheng Liu, Line Næsborg
wiley   +1 more source

Sulfur Ylides in Skeletal‐Editing—Ring Expansion Reactions

open access: yesHelvetica Chimica Acta, EarlyView.
Sulfur ylides (S‐ylides) are emergent diazo surrogates that enable skeletal editing and ring expansion with safer handling and broad functional group tolerance. This perspective covers pioneer works and highlights recent advances in the field, while outlining key challenges and future directions that may redefine the role of S‐ylides in modern ...
Arsala Kamal   +3 more
wiley   +1 more source

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