Cycloaddition of 1,3-benzothiazole-2-sulfenyl(selanyl) chlorides to an activated acetylenic bond

2012 ◽  
Vol 48 (9) ◽  
pp. 1428-1429 ◽  
Author(s):  
A. V. Borisov ◽  
Zh. V. Matsulevich ◽  
V. K. Osmanov ◽  
G. N. Borisova ◽  
V. V. Kachala
Keyword(s):  
Acetylenic Bond

scholarly journals 3-Phenyl-N,N,N′,N′-tetramethyl-1-ethyne-1-carboximidamidium bromide

2012 ◽  
Vol 68 (6) ◽  
pp. o1812-o1812 ◽  
Author(s):  
Ioannis Tiritiris ◽  
Willi Kantlehner
Keyword(s):  
Double Bond ◽  
Title Compound ◽  
Triple Bond ◽  
Positive Charge ◽  
Bond Distance ◽  
Double Bond Character ◽  
Acetylenic Bond ◽  
Compound C ◽  
Bond Character

The reaction of 3,3,3-tris(dimethylamino)-1-phenylprop-1-yne with bromine in pentane yields the title compound, C13H17N2 +·Br−. The acetylenic bond distance [1.197 (2) Å] is consistent with a C[triple-bond]C triple bond. The amidinium C=N bonds [1.325 (2) and 1.330 (2) Å] have double-bond character and the positive charge is delocalized between the two dimethylamino groups.

ChemInform Abstract: Stereocontrolled Addition Reactions to an Acetylenic Bond.

ChemInform ◽  
2010 ◽  
Vol 25 (21) ◽  
pp. no-no
Author(s):  
M. D. ISOBAEV ◽  
T. CH. ABDULLAEV ◽  
E. F. VENGER ◽  
E. M. GLAZUNOVA
Keyword(s):  
Addition Reactions ◽  
Acetylenic Bond

Fullerene complexes with palladium and rhodium as catalysts for acetylenic bond hydrogenation

2008 ◽  
Vol 18 (4) ◽  
pp. 209-210 ◽  
Author(s):  
Eugenia V. Starodubtseva ◽  
Viatcheslav I. Sokolov ◽  
Vasily V. Bashilov ◽  
Yurii N. Novikov ◽  
Ekaterina V. Martynova ◽  
...  
Keyword(s):  
Acetylenic Bond ◽  
Fullerene Complexes ◽  
Bond Hydrogenation

Acetylenic bond participation in biogenetic-like olefinic cyclizations. Wagner-Meerwein rearrangement of a linear to a bent vinyl cation

1972 ◽  
Vol 94 (24) ◽  
pp. 8604-8605 ◽  
Author(s):  
William S. Johnson ◽  
Michael B. Gravestock ◽  
Ronald J. Parry ◽  
Dominic A. Okorie
Keyword(s):  
Acetylenic Bond ◽  
Vinyl Cation

Double elimination protocol for aryleneethynylenes

2006 ◽  
Vol 78 (4) ◽  
pp. 731-748 ◽  
Author(s):  
Junzo Otera
Keyword(s):  
Aldol Reaction ◽  
Aromatic Aldehydes ◽  
Elimination Reaction ◽  
One Pot ◽  
Acetylenic Bond ◽  
Leaving Group

A variety of aryleneethynylenes are synthesized by double elimination reaction of β-substituted sulfones. The acetylenic bond is formed from readily available aromatic aldehydes and benzylic sulfones. A sequence of aldol reaction, trapping of the aldolates with a leaving group, and eliminations proceeds in one pot. The utility of this protocol is exemplified by synthesis of dihalo diphenylacetylenes, 5,6,11,12-tetradehydrodibenzo[a,e]cyclooctene, and double-helical aromatic acetylenes.

The Stereochemistry of Reduction of the Acetylenic Bond

1953 ◽  
Vol 75 (11) ◽  
pp. 2652-2654 ◽  
Author(s):  
B. S. Rabinovitch ◽  
F. S. Looney
Keyword(s):  
Acetylenic Bond

ChemInform Abstract: Synthesis and Choline Esterase-Inhibiting Activity of S-Ethynyl O,O-Dialkyl Thiophosphates Containing Cyclic Substituents at the Acetylenic Bond.

ChemInform ◽  
1987 ◽  
Vol 18 (32) ◽  
Author(s):  
N. N. GODOVIKOV ◽  
L. A. VIKHREVA ◽  
A. M. DARISHEVA ◽  
E. K. BALASHOVA ◽  
S. N. MORALEV ◽  
...  
Keyword(s):  
Inhibiting Activity ◽  
Acetylenic Bond ◽  
Choline Esterase

Tetrakis(phenylethynyl)tin(IV)

2007 ◽  
Vol 63 (11) ◽  
pp. m2762-m2762 ◽  
Author(s):  
Mohammed Lahcini ◽  
Minna T. Räisänen ◽  
Pascal M. Castro ◽  
Martti Klinga ◽  
Markku Leskelä
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Title Compound ◽  
Triple Bond ◽  
Three Dimensional ◽  
Asymmetric Unit ◽  
Tetrahedral Symmetry ◽  
Acetylenic Bond ◽  
Dimensional Network ◽  
Phenyl Proton

The asymmetric unit of the crystal structure of the title compound, [Sn(C8H5)4], consists of one fourth of a discrete tin complex and one half of another which both possess nearly ideal tetrahedral symmetry; the site symmetries of the two Sn atoms are \overline4 and 2. The bond angles at all acetylide C atoms are almost linear. The Sn—C distances [2.076 (6) and 2.065 (6)–2.069 (6) Å in the two complexes) are short when compared to the sum of the covalent radii of C and Sn (2.177 Å), but consistent with another tetrakis(alkynyl)tin complex. The acetylenic bond distances [1.196 (7) and 1.183 (7)–1.207 (7) Å] are consistent with a triple C[triple-bond]C bond. Therefore, despite the short Sn—C distances, the ligands are mainly σ-bonded to the metal. In the solid state, these complexes form a three-dimensional network via agostic C—H interactions as a phenyl proton in the ortho position interacts with the acetylenic carbon in the α position to the tin center.

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