33508-02-0Relevant academic research and scientific papers
A novel efficient method for the synthesis of substituted olefins; Cross coupling of two different alcohols using NaHSO4/SiO2
Aoyama, Tadashi,Koda, Shuichi,Takeyoshi, Yuka,Ito, Tetsuhiro,Takido, Toshio,Kodomari, Mitsuo
, p. 6605 - 6607 (2013/07/26)
Simple and efficient cross coupling of alcohols was developed in the presence of NaHSO4/SiO2 to give the corresponding substituted olefins. Direct coupling of alcohols and alkenes was also achieved to give substituted olefins. NaHSO4/SiO2 could be recycled 7 times without loss of catalytic activity.
Relative Reactivities of Alkyl-Substituted Alkenes and Cycloalkenes towards Diarylcarbenium Ions
Mayr, Herbert,Pock, Rudolf
, p. 2473 - 2496 (2007/10/02)
The relative reactivities of alkyl-substituted alkenes 4 towards diarylmethyl cations 2 generated in situ from diarylmethyl chlorides 1 and Lewis acids were determined by competition experiments.The relative reactivities were almost independent of the nature of the Lewis acid. Eventual differences of the solvation free enthalpies of various activated complexes are, therefore, independent of the nature of the gegen ions.The rate acceleration by methyl groups - 6-50 by CH3 at the attacked vinylic position and approximately 104 at the developing carbenium centre - indicates a scarcely bridged transition state.
