Results 111 to 120 of about 126,726 (160)
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ChemInform, 1988
AbstractIn contrast to the (2 + 2) cycloaddition reaction of aminoiminophosphines with iminoboranes, the title compounds (I) and (II) react to yield the heterocyclic products (III) and (IV).
D. GUDAT +3 more
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AbstractIn contrast to the (2 + 2) cycloaddition reaction of aminoiminophosphines with iminoboranes, the title compounds (I) and (II) react to yield the heterocyclic products (III) and (IV).
D. GUDAT +3 more
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Di-tert-butylcyclopentadiene and tri-tert-butylcyclopentadiene
Journal of the American Chemical Society, 1990Synthese de tris-t-butyl-1,2,4 et de di-t-butyl-1,3 (1,4 ou 2,5) cyclopentadiene-1,3 par alkylation, avec catalyse transfert phase, de cyclopentadiene-1,3 avec le bromo-2 methyl-2 ...
Clifford G. Venier, Edward W. Casserly
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Bis(tert-butylsulfonyl)ethyne and 1-tert-butylsulfinyl-2-tert-butylsulfonylethyne
Acta Crystallographica Section C Crystal Structure Communications, 2006The title compounds are electron-poor ethynes. The structure determination of bis(tert-butylsulfonyl)ethyne, C10H18O4S2, (I), is the first of a bis-sulfonyl-substituted ethyne. The molecule is situated on a crystallographic inversion centre. The S-Csp bond [1.737 (2) A] is the longest of this type reported to date.
Daniel B, Werz +3 more
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Tetra-tert-butylpyrazole and tetra-tert-butylthiophene
Tetrahedron Letters, 1992Abstract Tetra-tert.butylpyrazole (4) and tetra-tert.butylthiophene (11) were prepared starting from the seven membered cycloalkyne 1 and a reductive desulfurization in the last step. Some reactions of 4 and 11 are described. X-ray structural analyses of 11 and the corresponding S,S-dioxide were carried out.
Adolf W. Krebs +8 more
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Journal of Chemical & Engineering Data, 1994
The vapor pressures of methyl tert-butyl ether, ethyl tert-butyl ether, isopropyl tert-butyl ether, tert-amyl methyl ether, and tert-amyl ethyl ether were measured by ebulliometry or the static method in the pressure ranges 14--102 and 3--835 kPa (methyl tert-butyl ether), respectively.
M. A. Kraehenbuehl, J. Gmehling
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The vapor pressures of methyl tert-butyl ether, ethyl tert-butyl ether, isopropyl tert-butyl ether, tert-amyl methyl ether, and tert-amyl ethyl ether were measured by ebulliometry or the static method in the pressure ranges 14--102 and 3--835 kPa (methyl tert-butyl ether), respectively.
M. A. Kraehenbuehl, J. Gmehling
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Tetra‐tert‐butyltetraboratetrahedrane
Angewandte Chemie International Edition in English, 1991B4tBu4 wurde durch Reduktion von tBuBF2 mit Na/K‐Legierung synthetisiert. Eine Röntgenstrukturanalyse ergab eine Tetrahedranstruktur (siehe Bild), deren B4C4‐Gerüst nur geringfügig vom idealen Tetraeder abweicht. Trotz gespannter B‐B‐Bindungen und relativ geringer sterischer Abschirmung des B4‐Gerüsts ‐ dieses ist größer als das C4‐Gerüst in C4tBu4 ...
Mennekes, Theo +3 more
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Darstellung und Struktur von tert‐Butyl(tert‐butylamino)‐[tris(tert‐butyloxy)silylthio]boran
Zeitschrift für anorganische und allgemeine Chemie, 1988AbstractDie SH‐Bindung von (tBuO)3SiSH addiert sich glatt an die BN‐Bindung von tBuBNtBu unter Bildung der Titelverbindung. Diese kristallisiert triklin, Raumgruppe P1, mit einer unerwartet kurzen, Z‐konfigurierten BN‐Bindung, d(BN) = 137 pm.
W. Wojnowski +5 more
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