132540-51-3Relevant academic research and scientific papers
Retention of Configuration and E/Z Stereoselectivity in the Photolysis of cis- and trans-Tetraalkyl-4-methylene-1-pyrazolines
Quast, Helmut,Jakobi, Harald
, p. 1619 - 1626 (2007/10/02)
The isomeric 4-methylene-1-pyrazolines cis- and trans-2 are synthesized by a Wittig reaction from the pyrazolin-4-ones cis- and trans-1, respectively.Direct irradiation with 350-nm light of cis-2 affords the alkylidenecyclopropanes cis-8, (E)- and (Z)-9 (
