52056-09-4

Usage

InChI:InChI=1/C14H30Se2/c1-3-5-7-9-11-13-15-16-14-12-10-8-6-4-2/h3-14H2,1-2H3

Upstream product

• 4282-40-0 1-Iodoheptane 
• 629-04-9 1-Bromoheptane 

Relevant academic research and scientific papers

Catalyst-free gem-difunctionalization of fluoroalkyl-substituted diazo compound with diselenide or disulfide and NFSI

The gem-difunctionalization of fluoroalkyl-substituted diazo compounds by utilizing diselenides or disulfides and NFSI under catalyst-free and mild conditions is reported. A series of gem-aminoselenolation and gem-aminosulfonylation products bearing fluoroalkyl substituents were obtained in high to excellent yields. Different types of conjugated diazo compounds are also applicable to this transformation. Preliminary mechanistic studies indicate that a selenoimidate intermediate generated from diselenide and NFSI is involved for this transformation.

Rhodium-Catalyzed Carbene Transfer Reactions for Sigmatropic Rearrangement Reactions of Selenium Ylides

The rearrangement of selenium ylides is even today almost unexplored, although it would provide access to important organoselenium compounds with broad downstream applications. In this report, the first systematic study of sigmatropic rearrangement reactions of selenium ylides using a simple rhodium catalyst with catalyst loadings as low as 0.01 mol % is described. Selenium oxide pyrolysis of the rearrangement products gives access to important 1,1-disubstituted butadienes.

A rapid, efficient and green procedure for transformation of alkyl halides/ tosylates to organochalcogens in water

A one-pot and efficient synthesis of dialkyl dichalcogenides (S, Se) in aqueous media under catalyst-free conditions using benzylic, allylic and primary halides with elemental sulfur and selenium has been developed. Also, this procedure was extended to preparation of trisulfides and triselenides from secondary and tertiary halides in same condition. In all cases, products can be obtained in good to excellent yield in short reactions time.

An efficient one-pot synthesis of symmetrical diselenides or ditellurides from halides with CuO nanopowder/Se0 or Te0/base

(Equation Presented). A CuO nanopowder-catalyzed coupling reaction of aryl, alkyl, and heteroaryl iodides with elemental selenium and tellurium takes place in the presence of KOH at 90 °C in DMSO. A wide range of substituted symmetrical diselenides and ditellurides were afforded with good to excellent yields.

First example of selenium transfer reaction of primary selenoamides and selenourea. Novel synthesis of dialkyl diselenides from alkyl halides

As selenium transfer reagents, arylselenoamides react with a variety of alkyl halides in ethanol under mild conditions to give dialkyl diselenides in excellent yields.Similarly, alkyl halides treated with selenourea form dialkyl diselenides.The possible mechanism is discussed. Keywords: Selenium; Selenoamides; Diselenides; Selenourea; Alkyl halide

(1)H and (13)C NMR Studies on the Positional Isomers of Methyl Selenalaurate and Telluralaurate

A report is given of the (1)H and (13)C NMR spectra of a series of methyl selenalaurates and telluralaurates in which successive methylene groups have been replaced by a selenium or a tellurium atom.The effect on contiguous carbons is a marked upfield shift (shielding) while the protons attached to these carbons are deshielded.The β-and γ protons are weakly deshielded.

Pharmaceutical compositions having antineoplastic activity

Compositions containing as antineoplastic active principloe only dialkyl diselenides show a very promising activity not withstanding a remarkably lower toxicity in comparison with that of known combinations of the same dialkyldi selenides with other active principles.