01-43 chimica.qxd
... entropically driven because the reaction cuts one substrate into two pieces. In both cases, high selectivities toward products can usually be achieved. On the other hand, the cross-metathesis of acyclic compounds is essentially a thermoneutral process that eventually results in a statistical distrib ...
... entropically driven because the reaction cuts one substrate into two pieces. In both cases, high selectivities toward products can usually be achieved. On the other hand, the cross-metathesis of acyclic compounds is essentially a thermoneutral process that eventually results in a statistical distrib ...
post-peer-review-non-publishers
... where ΔH° is the standard enthalpy. This process generates synthesis gas (syngas) with a low H2/CO ratio, which is preferred for the synthesis of valuable oxygenated chemicals and long-chain hydrocarbons. Nevertheless, dry reforming of methane using conventional catalytic methods still faces two maj ...
... where ΔH° is the standard enthalpy. This process generates synthesis gas (syngas) with a low H2/CO ratio, which is preferred for the synthesis of valuable oxygenated chemicals and long-chain hydrocarbons. Nevertheless, dry reforming of methane using conventional catalytic methods still faces two maj ...
The Synthesis of Ferrocene
... Compounds containing only carbon, hydrogen, and iron have not hitherto been described, and the direct replacement of hydrogen attached to carbon by iron would not have been expected to be feasible. It has now been found that reduced iron, in the form of the well-known "doubly-promoted synthetic ammo ...
... Compounds containing only carbon, hydrogen, and iron have not hitherto been described, and the direct replacement of hydrogen attached to carbon by iron would not have been expected to be feasible. It has now been found that reduced iron, in the form of the well-known "doubly-promoted synthetic ammo ...
Elimination Reactions
... base (H2SO4, H3PO4). To favour SN1 over E1, use a good nucleophile. •To favour E2 over SN2, use a strong, bulky non-nucleophilic base. To favour SN2 over E2, use good nucleophiles that are relatively weak bases. •It is important to keep in mind that although you might choose reaction conditions that ...
... base (H2SO4, H3PO4). To favour SN1 over E1, use a good nucleophile. •To favour E2 over SN2, use a strong, bulky non-nucleophilic base. To favour SN2 over E2, use good nucleophiles that are relatively weak bases. •It is important to keep in mind that although you might choose reaction conditions that ...
Air-Stable Trialkylphosphonium Salts
... focusing on the phosphonium salts of P(n-Bu)3 and P(t-Bu)3. We show that [(n-Bu)3PH]BF4 and [(t-Bu)3PH]BF4 are stable to oxygen and to moisture and that they can be stored in air for long periods of time (>4 months) without any detectable deterioration. Furthermore, we demonstrate that these phospho ...
... focusing on the phosphonium salts of P(n-Bu)3 and P(t-Bu)3. We show that [(n-Bu)3PH]BF4 and [(t-Bu)3PH]BF4 are stable to oxygen and to moisture and that they can be stored in air for long periods of time (>4 months) without any detectable deterioration. Furthermore, we demonstrate that these phospho ...
