نتایج جستجو برای: organic sulfides

تعداد نتایج: 209817  

Journal: :Organic letters 2016
Masayuki Iwasaki Nikola Topolovčan Hao Hu Yugo Nishimura Glwadys Gagnot Rungsaeng Na nakorn Ramida Yuvacharaskul Kiyohiko Nakajima Yasushi Nishihara

Palladium-catalyzed carbothiolation of terminal alkynes with azolyl sulfides affords various 2-(azolyl)alkenyl sulfides with perfect regio- and stereoselectivities. The present addition reaction proceeded through a direct cleavage of carbon-sulfur bonds in azolyl sulfides. The resulting adducts that are useful intermediates in organic synthesis are further transformed to multisubstituted olefin...

Journal: :Applied and environmental microbiology 1978
T A McMeekin P A Gibbs J T Patterson

A technique using filter paper strips impregnated with 5-5'-dithiobis-nitrobenzoic acid was developed to allow the detection of bacteria (isolated from poultry-processing environs) which produced volatile sulfides (H2S, CH3SH, [CH3]2S). The technique is preferred to conventional methods in that it allows the detection of volatile organic sulfides in addition to hydrogen sulfide.

Journal: :Tetrahedron letters 2009
Pablo R Sacasa Jessica Zayas Stanislaw F Wnuk

Radical-mediated thiodesulfonylation of the vinyl and (α-fluoro)vinyl sulfones, derived from aldehydes and ketones, with aryl thiols in organic or aqueous medium provided access to vinyl and (α-fluoro)vinyl sulfides. The vinyl sulfides were formed predominantly with E stereochemistry independent of the stereochemistry of the starting vinyl sulfones.

2010
Shutao Wang Changhua An Jikang Yuan

Transition metal sulfides are scientifically and technologically important materials. This review summarizes recent progress on the synthetic fabrication of transition metal sulfides nanocrystals with controlled shape, size, and surface functionality. Special attention is paid to the case of MoS2 nanoparticles, where organic (surfactant, polymer), inorganic (support, promoter, doping) compounds...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی خواجه نصیرالدین طوسی - دانشکده علوم 1382

در فصل اول دو روش جدید جهت تهیه سولفیدهای آلی از دی سولفیدها در حضور zn/alcl3 ارایه شده است. در یک روش دی سولفیدها با آلکیل توسیلات های نوع اول در حضور پودر روی و آلومینیمکلرید در حلال استونیتریل و آب به سولفیدهای آلی تبدیل می شوند. در روش دیگر با استفاده از نمک دی فنیل یدونیم یدید و دید سولفیدها در حضور این سیستم و در حلال ذکر شده تحت شرایط ملایم سولفیدهای آلی تهیه می شوند. در هر دو روش دی سول...

Journal: :International journal of environmental research and public health 2016
Jian-Chao Shi Ting-Lin Huang Gang Wen Fei Liu Xiao-Peng Qiu Bao-Shan Wang

Sulfides and volatile organic sulfur compounds (VOSc) in water are not only malodorous but also toxic to humans and aquatic organisms. They cause serious deterioration in the ecological environment and pollute drinking water sources. In the present study, a source water reservoir--Zhoucun Reservoir in East China--was selected as the study site. Through a combination of field monitoring and in s...

Journal: :Organic & biomolecular chemistry 2015
Jipan Yu Chang Gao Zhixuan Song Haijun Yang Hua Fu

β-Alkoxy sulfides are widely used as versatile building blocks in organic synthesis. Therefore, it is highly desirable to develop a convenient and efficient method for oxysulfenylation of alkenes. In this communication, an easy and efficient metal-free approach to β-alkoxy sulfides has been developed. The protocol uses readily available 1-(arylthio)pyrrolidine-2,5-diones and alcohols as the oxy...

Journal: :Chemical communications 2005
Gonzalo de Gonzalo Gianluca Ottolina Giacomo Carrea Marco W Fraaije

[Cp*Rh(bpy)(H2O)]2+ was applied as a flavin regenerating reagent in BVMO catalyzed oxidations of organic sulfides to chiral sulfoxides.

Journal: :Organic & biomolecular chemistry 2011
Masaharu Ueno Taku Kitanosono Masaru Sakai Shū Kobayashi

Asymmetric Michael reactions of thiols with enones were catalyzed by a Sc(OTf)(3)-chiral bipyridine complex at room temperature in water without using any organic solvents, to afford the desired sulfides in high yields with high enantioselectivities.

Journal: :Chemical communications 2014
Zi Jun Wang Saman Ghasimi Katharina Landfester Kai A I Zhang

High surface area porous conjugated polymers were synthesized via the high internal phase emulsion polymerization technique and micropore engineering as efficient heterogeneous photocatalysts for highly selective oxidation of organic sulfides to sulfoxides under visible light.

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