4877-38-7Relevant academic research and scientific papers
CLEAVAGE OF (3-CHLORO-2-METHYLENECYCLOALKYL)PALLADIUM CHLORIDE DIMERS: FORMATION OF OLEFINS AND α-METHOXYOLEFINS
Donaldson, William A.
, p. 2901 - 2908 (2007/10/02)
The cleavage of the title compounds (7) in methanolic potassium hydroxide gives mixtures of olefins and α-methoxyolefins in good yields.The ratio of the products is dependent on the size of the carbocyclic ring.The mechanism proposed involves cleavage of 7 to the corresponding allylic chloride (8).Solvolysis of the chloride gives the α-methoxyolefin.Alternatively, oxidative addition of 8 to Pd(O) generates a new ?-allyl complex which affords the olefin product upon subsequent cleavage.
REACTIVITY OF (3-CHLORO-2-METHYLENECYCLOALKYL)PALLADIUM CHLORIDE DIMERS: PD-ALLYL CLEAVAGE, SYNTHESIS OF (+/-)-13-METHYLTRIDECANOLIDE
Donaldson, William A.,Taylor, Barbara S.
, p. 4163 - 4166 (2007/10/02)
The reactions of the title compounds under cleavage conditions affords the corresponding cycloalkenes as the major product.This methodology was used in the synthesis of 13-methyltridecanolide from cyclododecene.
222. Inductivity and Bridging in 2-Bicyclooctyl Cations. Polar Effects, Part II.
Grob, Cyril A.,Sawlewicz, Pawel
, p. 1906 - 1917 (2007/10/02)
The solvolysis rates and products of several 6-substituted 2-exo- and 2-endo-bicyclooctyl p-toluenesulfonates, 12 and 13, respectively, are reported.Inductivity, as measured by the reaction constants pI, is considerably less in the exo-series 12 (pI = -1.50) than in the corresponding 2-exo-norbornyl p-toluenesulfonates 1 (pI = -2.0).It is proposed that, for geometrical reasons, bridging of the cationic center C(2) by C(6) is not as strong in the bicyclooctane series 12 as it is in the norbornane series 1.On the other hand, inductivity is higher in the 2-endo-bicyclooctane series 13 (pI = -1.0) than in the corresponding 2-endo-norbornane series 3 (pI = 0.78), probably, because in the former case bridging of C(6) is less hindered by the departing anion.The relative yields of exo- and endo-substitution products from the series 12 and 13, are in accord with graded bridging of C(6) in the incipient bicyclooctyl cations.But almost constant bridging of C(2) by C(7) is indicated in the ionization of the 2-endo-bicyclooctane series 13.Consequently, in the free unsubstituted bicyclooctane cation C(2) is bridged symmetrically by C(6) and C(7), in contrast to the current concept of 'non-classical' two-electron-three-center bonding.
