منابع مشابه
Appendix 1. Diels-Alder Reactions
One of the most efficient methods (high yield, controlled stereochemistry, diverse functionality) to construct rings from smaller fragments is via cycloaddition reactions. The reverse reaction, namely splitting of a ring into smaller fragments is termed a cycloreversion reaction is also an important synthetic tool. (For example, in the present experiment it is the cracking of cyclopentadiene di...
متن کاملDiels–Alder reactions in water*
This review illustrates how water, as an environmentally friendly solvent, can have significant additional benefits when it is used as a solvent for the Diels–Alder reaction. The mechanism by which the unique properties of water enhance the rate and selectivity are discussed. Also, possibilities for the achievement of further increases in rate and enantioselectivity of aqueous Diels–Alder react...
متن کاملDiels-Alder reactions of quinone sulfoxides
The Diels-Alder reaction has often been used to construct polycyclic quinones from either benzoquinones or naphthoquinones.' This strategy has led to elegant syntheses of certain anthracyclines and also many other acetate-derived compounds. Several researchers, most notably Gesson and Brassard, have determined that the presence of a chlorine or bromine atom on the starting quinone framework per...
متن کاملThe first intramolecular silene Diels-Alder reactions.
The synthesis of silaheterocycles through the first examples of an intramolecular silene Diels-Alder reaction is described.
متن کامل1-Nitronaphtalene as a Dienophile in Diels-Alder Reactions
the utilization of substitued dienes with electron-donor groups and under high pressure conditions, induces the dienophilic character of 1-nitronaphtalene in Diels-Alder reactions, giving the products with and without the nitro-group, the yield depending on the nature of the dienes substituent groups. Introduction The Diels-Alder reaction has been subject of extensive studies for both theoretic...
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ژورنال
عنوان ژورنال: Molecules
سال: 1997
ISSN: 1420-3049
DOI: 10.1007/s007830050021