Helmut Lipka

Chemistry · Physical Sciences

6h-index159citations12works0.02yr avg
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Research Topics

Asymmetric Synthesis and Catalysis(4), Organic Chemistry Cycloaddition Reactions(4), Catalytic Alkyne Reactions(3), Radical Photochemical Reactions(2), Cyclopropane Reaction Mechanisms(2)

Publications12 total

CCDC 221522: Experimental Crystal Structure Determination
The Cambridge Structural Database·2004Open Access
Phenylsulfonyl Ene—Allenes as Efficient Precursors to Bicyclic Systems via Intramolecular [2 + 2]‐Cycloaddition Reactions.
ChemInform·2003· 1 citedOpen Access
Phenylsulfonyl Ene−Allenes as Efficient Precursors to Bicyclic Systems via Intramolecular [2 + 2]-Cycloaddition Reactions
The Journal of Organic Chemistry·2003· 65 cited
ChemInform Abstract: Periselectivity in the Base‐Catalyzed Intramolecular (2 + 2)‐ Cycloaddition Reaction of 3‐Phenylsulfonyl‐Substituted Propynes.
ChemInform·1995
Periselectivity in the base-catalyzed intramolecular [2+2]-cycloaddition reaction of 3-phenylsulfonyl-substituted propynes
Tetrahedron Letters·1995· 12 cited
ChemInform Abstract: Highly Substituted 1,3‐Dienes. Part 4. An Experimental and Theoretical Study of the Stereochemical Properties of 2‐tert‐Butyl‐1,3‐butadiene and 2,3‐Di‐tert‐butyl‐1,3‐butadiene.
ChemInform·1995
Highly Substituted 1,3‐Dienes, IV. An Experimental and Theoretical Study of the Stereochemical Properties of 2‐<i>tert</i>‐Butyl‐1,3‐butadiene and 2,3‐Di‐<i>tert</i>‐butyl‐1,3‐butadiene
Chemische Berichte·1994· 20 cited
ChemInform Abstract: Sterically Hindered Double Bond Systems. Part 3. Photoisomerization of Highly Alkylated Butadienes.
ChemInform·1994
Photoisomerization of Highly Alkylated Butadienes
Angewandte Chemie International Edition in English·1994· 30 cited
Photoisomerisierung hochalkylierter Butadiene
Angewandte Chemie·1994· 15 cited
ChemInform Abstract: Sterically Hindered Double Bond Systems. Part 2. On the Preparation of Highly Substituted 1,3‐Dienes.
ChemInform·1991
Sterisch gehinderte Doppelbindungssysteme, 2. Über die Darstellung hochsubstituierter 1,3‐Diene
Chemische Berichte·1991· 16 cited

Frequent Co-authors

Henning Hopf(7), Albert Padwa(5), Scott H. Watterson(5), M. Trætteberg(5), S. Shaun Murphree(2), Ralf Hänel(1), R. HAENEL(1), S.S. Muphree(1)