Addition of Secondary Amines to Alkynephosphonates
作者:A. E. Panarina、A. V. Dogadina、B. I. Ionin
DOI:10.1023/b:rugc.0000018649.77735.cf
日期:2003.11
Addition of secondary amines to diethyl alkynephosphonates, catalyzed by Cu(I) salts, proceeds regio- and stereospecifically and yields diethyl (E)-2-diethylaminooalkenephosphonates. The E configuration was established by analysis of the vicinal coupling constants between the phosphorus and carbon nuclei in the C-13 NMR spectra of the reaction products and model compounds: (3)J(PC) is 6-10 Hz at the cis arrangement of the coupled nuclei and 16 Hz or higher at the trans arrangement. In all the diethyl diethylaminoalkenephosphonates obtained, (3)J(PC) is about 5 Hz, suggesting cis addition.
Fedorova, G. K.; Anan'eva, L. G.; Yakovchuk, O. A., Journal of general chemistry of the USSR, 1984, vol. 54, # 7, p. 1321 - 1323
作者:Fedorova, G. K.、Anan'eva, L. G.、Yakovchuk, O. A.