Results 101 to 110 of about 17,328 (234)

Light‐Driven [2 + 2] Cycloaddition Strategies for the Synthesis of Cyclobuta[b]indoles and Their Derivatives

open access: yesChemPhotoChem, Volume 10, Issue 6, June 2026.
This review surveys the literature on light‐driven dearomative [2+2] cycloadditions of indoles, highlighting their power to access complex cyclobuta[b]indole frameworks. Advances in photocatalysis, sensitizer design, and reaction engineering enable selective and sustainable assembly of strained three‐dimensional architectures, expanding opportunities ...
Maria Chiara Cabua   +4 more
wiley   +1 more source

HEAVY ATOM LARGE AMPLITUDE MOTION IN RG-CYCLOPROPANE COMPLEXES

open access: yes, 1997
Author Institution: Department of Chemistry, University of AlbertaRotation-tunneling spectra of the van der Waals Complex Ne-cyclopropane, and pure rotational spectra of Ar-cyclopropane and Kr-cyclopropane, were measured with a Fourier transform ...
Xu, Yunjie, Jäger, Wolfgang
core  

Recent Advances in Intramolecular C─N Bond Formation for Pyrrolidine Synthesis

open access: yesChemistryOpen, Volume 15, Issue 6, June 2026.
This review highlights synthetic advances (2013–2025) in intramolecular C─N bond formation for constructing the pharmaceutically relevant pyrrolidine core. The review is organized into five methodological clusters: 1) intramolecular alkene/alkyne amination; 2) tandem annulations, which involve C─N bond formation as the key step; 3) nucleophilic ...
Rasma Kroņkalne, Māris Turks
wiley   +1 more source

Cyclopropane Fatty Acid Expression in Plants

open access: yes, 1999
Pants [sic] are transformed with a bacterial cyclopropane fatty acid synthase gene to produce lipids containing cyclopropane fatty acids.
Schmid, Katherine M.
core  

trans-2-(2,5-Dimethoxy-4-iodophenyl)cyclopropylamine and trans-2-(2,5-dimethoxy-4-bromophenyl)cyclopropylamine as potent agonists for the 5-HT2 receptor family

open access: yesBeilstein Journal of Organic Chemistry, 2012
A strategy to replace the ethylamine side chain of 2,5-dimethoxy-4-iodoamphetamine (DOI, 1a), and 2,5-dimethoxy-4-bromoamphetamine (DOB, 1b) with a cyclopropylamine moiety was successful in leading to compounds with high affinity at the 5-HT2 family of ...
Adam Pigott   +5 more
doaj   +1 more source

Divergent Synthesis of Polycyclic Derivatives via Gold Catalysis

open access: yesEuropean Journal of Organic Chemistry, Volume 29, Issue 20, 27 May 2026.
Gold(I)‐catalyzed cycloisomerization enables the formation of complex 3D structures from simple enyne precursors. This study presents a divergent strategy to synthesize functionalized bicyclic and tricyclic scaffolds from a common alkynyl ketone.
Emilie Gentilini   +4 more
wiley   +1 more source

Properties and biosynthesis of cyclopropane fatty acids in Escherichia coli.

open access: yes, 1979
The lipid phase transition of Escherichia coli phospholipids containing cyclopropane fatty acids was compared with the otherwise homologous phospholipids lacking cyclopropane fatty acids.
Jackson, M B   +3 more
core  

Hydrocarbon and nonhydrocarbon derivatives of cyclopropane

open access: yes, 1953
The methods used to prepare and purify 19 hydrocarbon derivatives of cyclopropane are discussed. Of these hydrocarbons, 13 were synthesized for the first time.
Slabey, Vernon A   +2 more
core  

TỐI ƯU HOÁ PHẢN ỨNG TẠO SẢN PHẨM CỦA DIAZO ACETOXY ACETONE VÀ STYRENE VỚI CHẤT XÚC TÁC BẤT ĐỐI p-NITRO- Ru(II)-DIALKYL-PHEOX

open access: yesTạp chí Khoa học Đại học Huế: Khoa học Tự nhiên
Các sản phẩm đối quang vòng ba “cyclopropane” đóng vai trò quan trọng trong dược phẩm và các sản phẩm tự nhiên có hoạt tính sinh học. Việc tìm kiếm và phát hiện ra các sản phẩm đối quang cyclopropane mới này trở thành một nguồn tài nguyên quý giá cho ...
Thi Loan Chi Le, Seiji Iwasa
doaj   +1 more source

Optimization of cyclopropane fatty acids production in Yarrowia lipolytica

open access: yes, 2019
International audienceCyclopropane fatty acids, which can be simply converted to methylated fatty acids, are good unusual fatty acid candidates for long‐term resistance to oxidization and low‐temperature fluidity useful for oleochemistry and biofuels ...
Nicaud, Jean‐Marc   +6 more
core   +1 more source

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