Results 271 to 280 of about 55,695 (341)

Copper-Catalyzed γ-C(sp³)-H Lactamization and Iminolactonization. [PDF]

Angew Chem Int Ed Engl
Sheng T, Zhuang Z, Zhao Z, Hoque ME, Yu JQ.   +4 more
europepmc   +1 more source

Volatile organic compound detection of Buruli ulcer disease: Headspace analysis of Mycobacterium ulcerans and used gauzes of Buruli-compatible ulcers. [PDF]

PLoS Negl Trop Dis
Chudy SFJ, Phanzu DM, Kolk AHJ, Sopoh GE, Barogui YT, Tzfadia O, Eddyani M, Fissette K, de Jong BC, Brinkman P.   +9 more
europepmc   +1 more source

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Modular access to substituted cyclohexanes with kinetic stereocontrol

Science, 2022
Substituted six-membered cyclic hydrocarbons are common constituents of biologically active compounds. Although methods for the synthesis of thermodynamically favored, disubstituted cyclohexanes are well established, a reliable and modular protocol for ...
Yangyang Li, Yuqiang Li, Hongjin Shi, Hong Wei, Haoyang Li, Ignacio Funes‐Ardoiz, Guoyin Yin   +6 more
semanticscholar   +1 more source

Four New Polyhydroxy Cyclohexanes from the Stems of Fissistigma tientangense

Chemistry and Biodiversity, 2023
Four undescribed polyhydroxy cyclohexanes, fissoxhydrylenes A–D (1–4), together with two known biogenetically related polyhydroxy cyclohexanes (5 and 6) were isolated from the stems of Fissistigma tientangense Tsiang et P. T. Li.
Mei‐Zhu Wu, Ming‐Chang Chen, Xiao‐Zheng Zhang, Chen Sun, Guangying Chen, Zixiang Yang, Caijuan Zheng, Youping Luo, Xue-ming Zhou   +8 more
semanticscholar   +1 more source

Diastereoselective synthesis of spiro[carbazole-3,5'-pyrimidines] and spiro[carbazole-3,1'-cyclohexanes] via four-component reaction.

Organic and biomolecular chemistry, 2021
Functionalized spiro[carbazole-3,5'-pyrimidines] and spiro[carbazole-3,1'-cyclohexanes] were efficiently synthesized in satisfactory yields with high diastereoselectivity by CuSO4 catalyzed multicomponent reaction of indole-2-acetate, aromatic aldehyde ...
Shao‐Cong Zhan, Ren Fang, Jing Sun, Chaoguo Yan   +3 more
semanticscholar   +1 more source

Sources of excited cyclohexane in the radiolysis of cyclohexane

The Journal of Physical Chemistry, 1988
Streak camera measurements of the relative yield of the excited state of cyclohexane (CH*) as a function of electron scavenger concentration (perfluoro-n-hexane, CO/sub 2/, and N/sub 2/O) strongly indicate that less than 10% of the CH* is formed by direct excitation.
A.C. Chernovitz, C.D. Johah, M.C. Sauer, B.C. Le Motais   +3 more
openaire   +2 more sources

Stereoselective Palladium-Catalyzed 1,3-Arylboration of Unconjugated Dienes for Expedient Synthesis of 1,3-Disubstituted Cyclohexanes

ACS Catalysis, 2019
As significant pharmacophores, 1,3-disubstituted cyclohexanes are widespread in natural products and synthetic bioactive molecules. In this work, we describe a palladium-catalyzed arylboration of 1,4-cyclohexadienes, which allows expeditious access to an
Hailiang Pang, Dong-Fang Wu, H. Cong, Guoyin Yin   +3 more
semanticscholar   +1 more source

Phase equilibria of binary clathrate hydrates of nitrogen+cyclopentane/cyclohexane/methyl cyclohexane and ethane+cyclopentane/cyclohexane/methyl cyclohexane

Chemical Engineering Science, 2011
Abstract In this communication, we first report hydrate dissociation conditions for the nitrogen+cyclopentane, cyclohexane or methyl cyclohexane+water and ethane+cyclopentane, cyclohexane or methyl cyclohexane+water systems at various temperatures. The experimental data were generated using an isochoric pressure-search method.
Mohammadi, Amir H., Richon, Dominique
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Phosphine-Catalyzed Chemo- and Diastereoselective [2 + 2 + 2] and [3 + 2] Annulations of γ-Methyl Allenoates with Doubly Activated Olefins: Syntheses of Highly Substituted Cyclohexanes and Cyclopentenes.

Journal of Organic Chemistry, 2019
Phosphine-catalyzed chemoselective [2 + 2 + 2] and [3 + 2] annulations of γ-methyl allenoates with doubly activated olefins have been developed, which afford highly substituted cyclohexanes bearing five continuous stereogenic centers and cyclopentenes ...
Rongfang Liu, Zifeng Qin, B. Fan, Ruifeng Li, R. Zhou, Zhengjie He   +5 more
semanticscholar   +1 more source

Nomenclature of Cyclohexane Bonds

Nature, 1953
IT was shown originally by X-ray and electron diffraction, and has been confirmed by other physical and by chemical means, that the most stable and permanent form of the cyclohexane ring is that particular strainless form which is sometimes likened to a chair or a staircase.
V. Prelog, D. H. R. Barton, O. Hassel, K. S. Pitzer   +3 more
openaire   +4 more sources