NOVEL HELQUATS, THEIR PRECURSORS AND METHOD OF PREPARATION THEREOF

摘要

Described are new helquats of general.formula I, their precursors of general formula II and III and methods of their preparation from compound of. general formula IV, where symbols S12, S1`2`, T23, T2`3` , R1 , R 2, X- have the meaning defined in description and claims. According to this invention it is possible e.g. from one non-symmetric compound of general formula IV (tether S1,2 is different from tether S1`2`) and 10 different alkylation agents to prepare 100 various helquats of general1, formula I and 90 various helquats without repetition of the alkylation agent. From symmetric compound of general formula IV (tether S1,2 is the same as tether S1`2` ) and 10 different alkylation agents it is possible to prepare 55 various helquats of general formula I and 45 various helquats without repetition of the alkylation agent.