作者:Yu. N. Klimochkin、A. V. Yudashkin、E. O. Zhilkina、E. A. Ivleva、I. K. Moiseev、Ya. F. Oshis
DOI:10.1134/s1070428017070028
日期:2017.7
An efficient one-pot procedure has been developed for the synthesis of cagealcohols with hydroxy groups in the bridgehead positions. The procedure includes initial nitroxylation with nitric acid or a mixture of nitric acid with acetic acid and subsequent hydrolysis in the presence of urea.
A new molecular capsule composed of U-shaped polyaromatic amphiphiles was synthesized and acts as a fluorescent supramolecular probe for recognizing various monoterpenes in water.
Hydroxy Derivatives of Diamantane, Triamantane, and [121]Tetramantane: Selective Preparation of Bis-Apical Derivatives
作者:Natalie A. Fokina、Boryslav A. Tkachenko、Anika Merz、Michael Serafin、Jeremy E. P. Dahl、Robert M. K. Carlson、Andrey A. Fokin、Peter R. Schreiner
DOI:10.1002/ejoc.200700378
日期:2007.10
Functionalizations of diamantane, triamantane, and tetramantane with electrophilic reagents (Br2, nitric acid) lead to various apical and medial disubstituted products that were separated and characterized individually. The highly desirable and otherwise inaccessible thermodynamically more stable apical bis-derivatives were obtained with high preparative yields through acid catalyzed isomerizations
Synthesis of Diamantane Derivatives in Nitric Acid Media
作者:Yu. N. Klimochkin、E. A. Ivleva、M. S. Zaborskaya
DOI:10.1134/s1070428021020081
日期:2021.2
Abstract 1-Mono- and 1,4-difunctional diamantanederivatives were synthesized by the reaction of diamantane with nitric acid or a HNO3–AcOH mixture followed by the addition of nitrogen-containing nucleophiles. Methyl N-(diamantan-1-yl)carbamothioate was synthesized from diamantan-1-ol and methyl thiocyanate in sulfuric acid.
The invention at hand provides at least dinitroxylated diamantanes. In addition, it provides methods for producing substituted diamantanes with high yields and selectivity.
According to the invention, dinitroxylated diamantanes are suitable for being 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 are able to be produced in a targeted manner by reaction with further nucleophiles.
Thus, the invention at hand provides the following methods according to the present invention for producing at least disubstituted diamantanes:
a) at least dinitroxylation, followed by the substitution of all nitroxy groups by a nucleophile or
b) at least dinitroxylation, subsequent rearrangement in the presence of a strong acid, after realised rearrangement all nitroxy groups are replaced by a nucleophile or
c) at least dinitroxylation, subsequent reaction with water (as nucleophile), rearrangement of the at least dihydroxylated compound in the presence of a strong acid, after realised rearrangement all hydroxy groups are replaced by another nucleophile.