6-Polyfluoroalkylated 2-thiouracils in the synthesis of pyrimido[2,1-b][1,3,5]thiadiazines by the double Mannich reaction
作者:Ol’ga G. Khudina、Anna E. Ivanova、Yanina V. Burgart、Victor I. Saloutin、Marionella A. Kravchenko
DOI:10.1016/j.jfluchem.2013.01.018
日期:2013.3
groups to yield pyrimido[2,1-b][1,3,5]thiadiazines via the multicomponent double Mannichreaction. The structure of 3-benzyl-8-nonafluorobutyl-3,4-dihydro-2H,6H-pyrimido[2,1-b][1,3,5]thiadiazin-6-one was studied by the X-ray diffraction analysis. The use of ethylenediamine in these reactions yields 3,3′-ethane-1,2-diyl-bis(pyrimido[2,1-b]thiadiazinone) as a result of the bis-double Mannich cyclocondensation