Consequences of fixing three parallel coplanar double bonds in close proximity with different geometries. Synthesis and spectral parameters of syn- and anti-sesquinorbornatriene
Experimental Investigation of the Primary and Secondary Deuterium Kinetic Isotope Effects for Epoxidation of Alkenes and Ethylene with <i>m</i>-Chloroperoxybenzoic Acid
作者:Terry Koerner、H. Slebocka-Tilk、R. S. Brown
DOI:10.1021/jo981652x
日期:1999.1.1
The secondary deuterium kinetic isotope effect (DKIE) for the epoxidation of ethylene and d(4)-ethylene by m-chloroperoxybenzoic acid (MCPBA) is determined to be 0.83, or 0.95/alpha-H. The second-order rate constants for MCPBA and MCPBA-O-D epoxidation of a variety of alkenes that differ in the steric access to the double bond (anti-sesquinorbornene (2), tetramethylethylene (3), adamantylideneadamantane
Synthesis of polycyclic alkenesvia reductive elimination of β-dicyano derivatives: a facile preparation ofAnti-sesquinorbornene and related molecules
作者:Ottorio De Lucchi、Nicoletta Piccolrovazzi、Giorgio Modena
DOI:10.1016/s0040-4039(00)94271-0
日期:——
-Sesquinorbornene 1b, the hitherto unknown related unsaturated molecules 1a,a and the dienes 13 and 14 are among the endocyclic alkenes which can be prepared reductive elimination of the respective, readily available β-dicyano derivatives.
Experimental evidence establishing an upper limit to the activation barrier for the butterfly bending of the double bond in anti-sesquinorbornene.
作者:Richard Vaughan Williams、Chiu-Lien Ann Sung、Henry A. Kurtz、Thomas M. Harris
DOI:10.1016/0040-4039(88)80004-2
日期:1988.1
Low temperature13C NMR and theoretical results are presented which imply that in the groundstate of anti-sesquinorbornene the double bond is either pyramidal with a very lowbarrier to inversion or planar.
给出了低温13 C NMR和理论结果,这表明在抗次喹啉降冰片烯的基态中,双键要么呈锥体结构,对反演的阻隔性就很低,要么呈平面状。
Acid-Catalyzed Hydration of <i>anti</i>-Sesquinorbornene
作者:H. Slebocka-Tilk、R. S. Brown
DOI:10.1021/jo9611677
日期:1996.11.15
The acid-catalyzedhydration of anti-sesquinorbornene (1) has been studied at 25 degrees C in 20% DME/H(2)O from 0.001 M < [HC1] < 0.05 M. The second-order rate constant for hydration is 5.35 +/- 0.07 M(-)(1) s(-)(1) which can be compared with a value of 1.38 +/- 0.06 M(-)(1) s(-)(1) for ethyl vinyl ether determined under the same conditions. The solvent deuterium kinetic isotope effect for hydration