Abstract:
The invention relates to at least dinitroxylated diamantanes, and to methods by which means a high yield and selectivity of substituted diamantanes can be produced. According to the invention, dinitroxylated diamantanes can be reacted with nucleophiles to form the corresponding disubstituted diamantanes. Surprisingly, it was discovered that at least dinitroxylated or hydroxylated diamantanes are rearranged in the presence of a strong acid, creating at least 4,9-nitroxylated or hydroxylated diamantanes. On the basis of this, 4,9-substituted diamantanes can be produced in a targeted manner by reaction with other nucleophiles. The inventive methods for producing at least disubstituted diamantanes consist of the following steps: a) at least dinitroxylation, followed by substitution of all of the nitroxy groups with a nucleophile, or b) at least dinitroxylation, then rearrangement in the presence of a strong acid, all nitroxy groups being replaced by a nucleophile in the event of a successful rearrangement, or c) at least dinitroxylation, followed by a reaction with water (as nucleophile), and rearrangement of the at least dihydroxylated compound in the presence of a strong acid, all hydroxy groups being replaced by another nucleophile in the event of a successful rearrangement.
Abstract:
Methods and reagents for photo-initiated carbonylation with carbon-isotope labeled carbon monoxide using alkyl/aryl iodides with water pretreated by a base are provided. The resultant carbon-isotope labeled acids are useful as radiopharmaceuticals, especially for use in Positron Emission Tomography (PET). Associated kits for PET studies are also provided.
Abstract:
The subject invention concerns a method for identifying complementary chemical functionalities to form a desired supramolecular synthon. The subject invention also pertains to multiple-component phase compositions comprising one or more pharmaceutical entities and methods for producing such compositions.
Abstract:
At least one functional group selected between nitro and carboxyl groups can be introduced into a substrate by bringing the substrate into contact with at least one reactant selected from among (i) nitrogen oxides and (ii) carbon monoxide/oxygen mixtures in the presence of an imide compound represented by general formula (1), wherein R and R are each hydrogen, halogeno, alkyl, aryl or cycloalkyl, or alternatively they may be united to form a double bond or an aromatic or nonaromatic ring; W is O or OH; and n is 1 to 3, (e.g., N-hydroxy-phthalimide). The nitrogen oxides include compounds for the general formula: NxOy (such as N2O3 and NO2), and the substrate includes compounds bearing methyne carbon atoms, such as adamantane, and aromatic compounds having a methyl or methylene group at the position adjacent to the aromatic ring. Such a process enables efficient nitration or carboxylation even under relatively mild conditions.
Abstract translation:通过使底物与至少一种选自(i)氮氧化物和(ii)一氧化碳/氧混合物的反应物接触,在硝基和羧基之间选择的至少一个官能团可以引入基底 由通式(1)表示的酰亚胺化合物,其中R 1和R 2各自为氢,卤代,烷基,芳基或环烷基,或者它们可以一起形成双键或芳族或非芳族环; W是O或OH; n为1〜3(例如,N-羟基邻苯二甲酰亚胺)。 氮氧化物包括以下通式的化合物:N x O y(例如N 2 O 3和NO 2),并且底物包括具有甲炔碳原子的化合物,例如金刚烷,以及在与芳环相邻的位置具有甲基或亚甲基的芳族化合物 。 这种方法即使在相对温和的条件下也能有效地硝化或羧化。