๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Effect of Substituents and of Wavelength of Irradiation on the Photo-Fries-Rearrangement of Enol-Esters Preliminary Communication

โœ Scribed by Dan Veierov; Tuvia Bercovici; Ernst Fischer; Yehuda Mazur; Amnon Yogev


Publisher
John Wiley and Sons
Year
1975
Tongue
German
Weight
226 KB
Volume
58
Category
Article
ISSN
0018-019X

No coin nor oath required. For personal study only.

โœฆ Synopsis


Abstract

Enolโ€esters 1aโ€1e undergo clean Photoโ€Friesโ€rearrangements without side reactions. With anthroyl derivatives the reaction is observed only at 254 nm, not at 366 nm.


๐Ÿ“œ SIMILAR VOLUMES


Influence of enol acetylation on the pho
โœ Garcia, Hermenegildo ;Miranda, Miguel A. ;Roquet-Jalmar, Maria F. ;Martinez-Utri ๐Ÿ“‚ Article ๐Ÿ“… 1982 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 316 KB

## Abstract The enol acetate **1b** undergoes benzoylโ€oxygen bond rupture upon irradiation, giving a mixture of benzophenones **4** and **5**. The primary photoโ€Fries products **2** and **3** could not be isolated, due to a rapid intramolecular transacetylation. The acetophenone **6** rearranges to

The Photochemical Behavior of Endocyclic
โœ Paul Margaretha ๐Ÿ“‚ Article ๐Ÿ“… 1974 ๐Ÿ› John Wiley and Sons ๐ŸŒ German โš– 361 KB

## Abstract Alkyl substituents on C~ฮฒ~ of the C๏ฃฟC double bond hinder both photodimerization of endocyclic oxaโ€enones (**1**โ€“**4**) and their photocycloaddition to olefins, and they cause a loss of regiospecificity in dimerization in unpolar solvents. The oxaโ€enone **3** which like the bicyclic comp

Effects of irradiance, wavelength, and t
โœ Vladja Torno; Paulo Soares; Juliana M. H. Martin; Rui F. Mazur; Evelise M. Souza ๐Ÿ“‚ Article ๐Ÿ“… 2008 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 197 KB ๐Ÿ‘ 1 views

## Abstract The aim of this study was to evaluate the effects of irradiance, light emission wavelength, and heating of different light curing units on the Knoop and Vickers hardness of a hybrid composite resin. The specimens were irradiated during 40 s with ten different light curing units, LEDs, a