Chemistry of Adamantanes by R.C. Bingham, P.R.v. Schleyer

By R.C. Bingham, P.R.v. Schleyer

Content material: contemporary advancements within the chemistry of adamantane and comparable polycyclic hydrocarbons / via R.C. Bingham and P.V.R. Schleyer

Show description

Read or Download Chemistry of Adamantanes PDF

Similar general & reference books

Mathematical Challenges from Theoretical-Computational Chemistry

Computational equipment are speedily changing into significant instruments of theoretical, pharmaceutical, fabrics, and organic chemists. for this reason, the mathematical types and numerical research that underlie those equipment have an more and more very important and direct position to play within the development of many parts of chemistry.

Gas Fluidization

This publication is a much-needed fluidization guide for training engineers. There are few vegetation which don't have a fluid mattress procedure working someplace at the website, but engineers hardly ever have any formal education within the topic. collage classes frequently emphasize educational matters instead of commercial wishes, and a research of the literature unearths an overpowering abundance of correlations and experimental facts.

Stereoselective Organocatalysis: Bond Formation Methodologies and Activation Modes

Units forth an immense crew of environmentally pleasant natural reactionsWith contributions from major foreign specialists in natural synthesis, this booklet offers the entire most crucial methodologies for stereoselective organocatalysis, totally interpreting either the activation mode in addition to the kind of bond shaped.

Pillararenes

First pronounced in 2008, Pillararenes are a brand new classification of macrocyclic hosts inclusive of hydroquinone devices associated on the para-position. With a composition just like cucurbiturils and calixarenes, they mix the benefits and points of conventional hosts and feature purposes in sensing, fabric synthesis and biomedicine.

Extra info for Chemistry of Adamantanes

Sample text

15o). Cf Ref. 155)). l-adamantyl cation appear furthest downfield. This "anomalous" chemical shift is also observed in the spectrum of the i-diamantyl cation (58) obtained from the SbFs-FSO3H solution of diamantane 157). 67 ppm 58 This 7-deshielding effect might be explained on the basis of a special cage effect which enables the back lobes of the bridgehead C-H bonds to overlap with the vacant p-orbital of the cation 156). No direct experimental evidence exists which would substantiate this special cage effect, however.

0 4, 1o]. decanol (Eq. (28)) 9a). NNTs Na + (27) 29 0 (28) 42 Direct substitution of hydrocarbon 2 9 via both carbomethyloxynitrene insertion (Eq. (29)) and chromyl acetate oxidation (Eq. (30)) has been studied. The nitrene insertions are fairly unselective. On a per bond basis, both tertiary NHCO2 CH3 29 9 N H C O ~ CH 3 + (29) + 120 ~ NHCO2CH 3 OH , ยง (30) sites are attacked about 4 times more readily than the methylene positions. Tertiary/secondary ratios of this order are quite typical 94).

A. 100 MHz spectrum of triamantane. B. 220 MHz spectrum of homoadamantane. (After Ref. 33) and 1S 1), respectively). 43 Physical Properties duced in the mono-substituted adamantanes, the chemical shifts of a wide variety of 1,3-, 1,3,5. and 1,3,5,7-polysubstituted adamantanes may be estimated accurately. The chemical shifts of 1-substituted adamantanes are correlated well with substituent electronegativity 15o) as measured by o* 152) or group dipole moments 153) Only the chemical shifts observed for the 7 (bridgehead) position exhibit the normal inductive order, however; the chemical shifts of the/~ (adjacent methylene) and 8 (far methylene) hydrogens appear to be anisotropy controlled 159).

Download PDF sample

Rated 4.58 of 5 – based on 24 votes