Results 301 to 310 of about 480,912 (334)

ChemInform Abstract: Alkylation of Acetonitrile

ChemInform, 1997
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Douglass F. Taber, Sue Kong
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Alkylation of heteroaryl alkyl metals by bistrialkylsilylperoxides

Tetrahedron, 1990
AbstractHeteroalkyl methyl metals obtained from (III)/LDA undergo methylation upon treatment with the silylperoxide (I) to give the compounds (IV); in addition, the trimethylsilyloxylation products (Va) and (Vb) as well as the silylation product (VIa) are formed.
E. Epifani, Saverio Florio, Luigino Troisi   +2 more
openaire   +3 more sources

Alkylated steroids from tosylhydrazones and alkyl-lithiums

Journal of the Chemical Society C: Organic, 1971
The reaction between 5α-cholestan-3-one tosylhydrazone and alkyl-lithium reagents produces equatorial 3β-alkyl-5α-cholestanes.
Ciria Valencia Ortiz, Josef E. Herz
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Alkylation of tricarbonylcyclohexadienyliron salts () with lithium alkyls

Tetrahedron Letters, 1980
Abstract The salts 1 (Y=H, OMe, Me) react with RLi(R=Me, n-Bu, i-Pr, t-Bu) in CH2Cl2 at low temperature to give 2 and 3 in excellent yields. Nucleophilic addition at the 1-position of 1 (Y=OMe) has been observed for the first time.
B. M. Ratnayake Bandara, Thong-Chak Khor, Arthur J. Birch   +2 more
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Reductive alkyl–alkyl coupling from isolable nickel–alkyl complexes

Nature
The selective cross-coupling of two alkyl electrophiles to construct complex molecules remains a challenge in organic synthesis1,2. Known reactions are optimized for specific electrophiles and are not amenable to interchangeably varying electrophilic substrates that are sourced from common alkyl building blocks, such as amines, carboxylic acids and ...
Samir Al Zubaydi, Shivam Waske, Volkan Akyildiz, Hunter F. Starbuck, Mayukh Majumder, Curtis E. Moore, Dipannita Kalyani, Christo S. Sevov   +7 more
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S,S-Alkyl S?-alkyl(4-methoxyphenyl)phosphonotrithiolothionates

Bulletin of the Russian Academy of Sciences Division of Chemical Science, 1992
[I / \P--At ~i / Ar-P" + 2RSSR ---~ 2At --P I~ \SR \ s / s (1) (2a~ b) ~3a. b) Ar=4-MeOC~H,: R=Et(a), i-Bu(b), The IR spectra of (3a) and(3b) have bands at (v, cm'l): 3075-3070 w, 3010 w (:C-H, Ar), 1594-1590 s, 1500-1497 s (C'-w-" CAr), 698-696 v.s.br (P--S), 535 s, 515-515-510 m (PS2).
L. A. Al’metkina, A. N. Pudovik, Elvira S. Batyeva, Il'yas S. Nizamov, Vladimir A. Alfonsov   +4 more
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Diastereoselective radical alkylations of alkyl aryl sulfoxides

Tetrahedron Letters, 1996
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ZAHOUILY M, CARON, Giulia, CARRUPT P. A, KNOUZI N, RENAUD P.   +4 more
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Alkylation of metals and the activity of metal‐alkyls†

Toxicological & Environmental Chemistry, 1984
The biochemical basis for resistance to metal ion toxicity is emerging though it is complicated by the different resistance mechanisms. Several strategies for resistance to toxic metal ions have been identified: The development of energy driven efflux pumps which keep toxic element levels low in the interior of the cell.
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Alkylation of germanium halides by aluminium alkyls

Journal of the Chemical Society A: Inorganic, Physical, Theoretical, 1967
The alkylation of germanium tetrachloride by trimethylaluminium, methylaluminium sesquichloride, triethylaluminium, and tri-isobutylaluminium has been examined. Tetra-alkylgermanes are formed together with di- and poly-germanes, GenR2n+2. In all cases the monoalkylation of GeCl4 is slow, and the formation of reactive Ge·Al intermediates is postulated ...
J. R. C. Light, F. Glockling
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Alkyl bis(trichloro-t-alkyl) phosphites

Bulletin of the Academy of Sciences of the USSR Division of Chemical Science, 1967
1. As a result of steric hindrance the reactivity of bis(trichloro-t-alkyl) phosphorochloridites toward alcohols diminishes from primary to secondary alcohols, and with tertiary alcohols the reaction does not go. 2. Alkyl bis[1-methyl-1-(trichloromethyl)propyl], alkyl phenyl 2,2,2-trichloro-1,1-dimethylethyl, and dialkyl 1-methyl-1 ...
V. K. Khairullin, V. N. Eliseenkov
openaire   +2 more sources