First allylboration of organic compounds with the NN double bond. Synthesis of N-allylpyrazolidines and allyl-1,2-diphenylhydrazine
作者:Ivan P. Klimenko、Andrey F. Medvedev、Victor A. Korolev、G.D. Kolomnikova、Yury V. Tomilov、Yuri N. Bubnov
DOI:10.1016/j.jorganchem.2009.02.012
日期:2009.6
Triallylborane adds to the NN doublebond of pyrazolines 1 and 2 at 0 °C giving after deboronation the corresponding N-allylpyrazolidines 4 and 5. Further transformations of allylpyrazolidine 4 including the cyclopropane ring opening were studied. Allylboration of azobenzene with triallylborane gives rise to 1-allyl-1,2-diphenylhydrazine.