Results 161 to 170 of about 754 (188)

ChemInform Abstract: Synthesis of 3‐Spiroannulated Hexahydro‐6,8a‐epoxyisoquinolines

ChemInform, 2002
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Alexey V. Varlamov, Evgenia V. Nikitina, Fedor I. Zubkov, Olga V. Shurupova, Alexei I. Chernyshev   +4 more
openaire   +1 more source

ChemInform Abstract: VINYLSILANE‐MEDIATED SPIROANNULATION. SYNTHESIS OF SPIRO(4.5)DECADIENONES

Chemischer Informationsdienst, 1981
AbstractAus den beiden Cyclohexenon‐ethern (I) erhält man mit Trimethylsilyl‐vinyllithium (II) die Substitutionsprodukte (III), die mit Lithiumalanat zu Carbinolen (IV) reduziert und dann mit Vinyl‐ethyl‐ether und Hg‐acetat zu den Aldehyden (V) umgesetzt werden.
S. D. BURKE, C. W. MURTIASHAW, M. S. DIKE, S. M. SMITH STRICKLAND, J. O. SAUNDERS   +4 more
openaire   +1 more source

Leveraging Borylcupration for Enantioselective Cascade Spiroannulation: Access to Spirophthalide Boronates

Organic Letters
Herein, we report a cascade reaction to produce spirophthalide boronate frameworks efficiently. This protocol involves borylcupration as a cascade triggering reaction followed by intramolecular aldol reaction, hemiacetalization, and subsequent oxidation, allowing the formation of optically pure spirophthalide boronates with excellent enantio- and ...
Laxman Devidas Khalse, Prashant B. Patil, Prasanta Ghorai   +2 more
openaire   +2 more sources

Efficient Synthesis of Benzospirocyclohexadienones via PIFA-Promoted Intramolecular Dearomative Spiroannulation

Synthesis
AbstractA rapid and convenient method for the synthesis of differently substituted spiro[cyclohexane-1,1′-isochromane]-2,5-dien-4-one derivatives via phenyliodine(III) bis(trifluoroacetate) (PIFA)-promoted intramolecular oxidative dearomatization at the para position is disclosed, with the aim of building a library of new spirocyclohexadienone ...
Mingan Wang, Xinkun An, Tingting Zhang, Haoyun Ma, Xie He   +4 more
openaire   +1 more source

Regiodivergent Synthesis of Spirocyclic Compounds through Pd‐Catalyzed Regio‐ and Enantioselective [3+2] Spiroannulation

Angewandte Chemie - International Edition, 2021
Barry M Trost, Zhijun Zuo
exaly  

Dearomatizing [4+1] Spiroannulation of Naphthols: Discovery of Thermally Activated Delayed Fluorescent Materials

Angewandte Chemie - International Edition, 2021
Yudong Yang, Chengming Li, Jingbo Lan
exaly  

Metal-free nucleophilic 7,8-dearomatization of quinolines: Spiroannulation of aminoquinoline protected amino acids

Chinese Chemical Letters, 2023
Zhiguo Zhang, Na-Na, Guisheng Zhang
exaly  

Cyclocontraction - spiroannulation: a stereoselective approach to spirocycles

Journal of the American Chemical Society, 1983
Barry M. Trost, Bruce R. Adams
openaire   +1 more source

A Dearomatization/Debromination Strategy for the [4+1] Spiroannulation of Bromophenols with α,β‐Unsaturated Imines

Angewandte Chemie - International Edition, 2020
Lu Bai, Jingjing Liu, Xinjun Luan
exaly  

Palladium-Catalyzed Dynamic Kinetic Asymmetric Spiroannulation

Synfacts, 2015
openaire   +1 more source