132206-14-5Relevant articles and documents
Addition of Twisted 1-Thioacetyl-2,2-diaminoethylenes to Dimethyl Acetylenedicarboxylate. Formation and Ring Opening of Thiopyran-4-spiro-2'-(1',3'-diazacyclanes)
Khan, Agha Zul-Qarnain,Sandstroem, Jan
, p. 1902 - 1907 (2007/10/02)
Reaction of 1,3-dialkyl-2-(4,4-dimethyl-2,6-dithiocyclohexylidene)imidazolidines and -hexahydropyrimidines (twisted push-pull ethylenes, 3) with methyl iodide followed by treatment with base leads smoothly to S-methyl derivatives, which are betaines with