Journal ArticleDOI
Synthesis of cycloalkenes by intramolecular titanium-induced dicarbonyl coupling
John E. McMurry,Kenneth L. Kees +1 more
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This article is published in Journal of Organic Chemistry.The article was published on 1977-07-01. It has received 72 citations till now. The article focuses on the topics: Coupling (electronics) & Intramolecular force.read more
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Methods of Reactivity Umpolung
TL;DR: There are six principal methods of umpolung: 1 2n-oxidation, heteroatom exchange and modification, homologation and its reversal, the cyclopropane “trick”, use of acetylenes, and redox reactions; under certain circumstances none of these techniques is necessary in cases where direct umpoline is possible.
Journal ArticleDOI
Methoden der Reaktivitätsumpolung
TL;DR: The Umpolung der Reaktivitat wurde als nutzliches heuristisches Prinzip, als Einteilungsschema und als Leitfaden zum Auffinden strategischer Bindungen erkannt (Synthon-, Transform-and Retrosynthesebetrachtungen nach Corey) as mentioned in this paper.
Journal ArticleDOI
Synthesis and photochromic properties of molecules containing [e]-annelated dihydropyrenes. Two and three way pi-switches based on the dimethyldihydropyrene-metacyclophanediene valence isomerization.
Reginald H. Mitchell,Timothy R. Ward,Yongsheng Chen,Yunxia Wang,S. Ananda Weerawarna,Peter W. Dibble,Michael J. Marsella,and Adah Almutairi,Zhi-Qiang Wang§ +8 more
TL;DR: The syntheses of several new simple negative, a simple positive, and multiple negative photochromes containing the dihydropyrene-cyclophanediene photochromic system are described and thermodynamic data are obtained for the thermal closing reactions.