✦ LIBER ✦

Circular Dichroism of Some Isomeric Alkyl Pyridines

✍ Scribed by Piero Pino; Oreste Piccolo; Barbara Straub; Giambattista Consiglio; Dich Cong Tran

Publisher: John Wiley and Sons
Year: 1982
Tongue: German
Weight: 393 KB
Volume: 65
Category: Article
ISSN: 0018-019X
DOI: 10.1002/hlca.19820650717

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The UV. and CD. spectra of the optically active 2‐, 3‐ and 4‐(l‐methylpropyl)‐pyridines (1a, b, c) and of the corresponding (2‐methylbutyl)pyridines (2a, b, c) have been investigated in hexane at RT. and at −85°, in hexane/TFA and in aqueous HCl‐solution. In 1c and 2c both the n → π* and the π → π* transitions are optically active, an n → π* transition being located above 265 nm. The position and the sign of the CD. bands are greatly influenced by the position and the nature of the alkyl substituent.

📜 SIMILAR VOLUMES

Circular Dichroism of Some 2-(Phenylmeth

Circular Dichroism of Some 2-(Phenylmethyl)pyridine Derivatives

✍ Nikolina Berova; Stefan Eojadziev; Nevenka Bresciani-Pahor; Petko M. Ivanova; Bi 📂 Article 📅 1990 🏛 John Wiley and Sons 🌐 German ⚖ 489 KB

The absolute configuration of the 2-(phenylmethy1)pyridine derivatives 1-9 had been established by X-ray diffraction and chemical correlation. Their CD spectra have been studied in different solvents for the free and protonated forms. It has now been found that, from the sign of the strong CD couple

Circular dichroism of some mononucleosid

Circular dichroism of some mononucleosides

✍ Wendel C. Brunner; Marcos F. Maestre 📂 Article 📅 1975 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 406 KB 👁 2 views

## Abstract The circular dichroism (CD) and absorption spectra of uridine, thymidine, purine ribonucleoside, and the four adenine derivatives 2′‐deoxyadenosine, adenosine, adenosine‐3′,5′‐cyclic phosphate, and arabinosyl adenine were measured in water at pH 7 and pH 2. The absorption and CD spectra

Magnetic circular dichroism of some halo

Magnetic circular dichroism of some halogenobenzenes

✍ A. Kaito; A. Tajiri; M. Hatano 📂 Article 📅 1974 🏛 Elsevier Science 🌐 English ⚖ 395 KB

The MCD spectra of hexachlorobemede, 1,3,5-t~ichlorobenzene, hexabromobenzene and 1,3,5-triiromobenzene have been measured. For each molecule, the Faraday A term was observed in the region of the \*At& 'Etu transition and thereby the magnetic moment in the \*E tu state was extracted. It appears that

Magnetic circular dichroism and molecula

Magnetic circular dichroism and molecular orbital studies of isomeric azulenotropones

✍ Akio Tajiri; Masahiko Fukuda; Masahiro Hatano; Masafumi Yasunami; Atsushi Takagi 📂 Article 📅 1984 🏛 Elsevier Science 🌐 English ⚖ 312 KB

111~ absorption and \lCI> qxctra of isomeric azulcncitropones UXTC mcasurcd to sbo\v that they csist in different structures in CI-~CO,II and CH3Oil. A semi-empirical LCAO SlO WI-Cl calculation revcalcd tbc clcctronir transitions cbaracteristic ol' the szulenotroponc skclcton and interpreted tbc spe

Magnetic circular dichroism of some benz

Magnetic circular dichroism of some benzene derivatives

✍ A. Kaito; A. Tajiri; M. Hatano 📂 Article 📅 1974 🏛 Elsevier Science 🌐 English ⚖ 500 KB

Circular dichroism of some crowded cycli

Circular dichroism of some crowded cyclic olefins

✍ J.K. Gawaroński 📂 Article 📅 1977 🏛 Elsevier Science 🌐 French ⚖ 400 KB