W. Tyrra et al., CARBENOID REACTIONS OF TRIFLUOROMETHYLELEMENT COMPOUNDS .4. REACTIONSOF TRIFLUOROMETHYLZINC BROMIDE WITH ENAMINES AND METHYLENE BASES, Journal of fluorine chemistry, 70(2), 1995, pp. 181-185
The reactions of ZnBr(CF3).2CH(3)CN with 1-morpholinocyclo-pentene and
-hexene have been investigated and found to yield mixtures of two iso
mers of holino-1-cyanomethyl-2-difluoromethyl-cyclopentane and -hexane
, respectively. The interaction with methylene bases of nitrogen heter
ocycles leads to the formation of trimethinecyanine dyes. This reactio
n sequence includes the formation of two carbon-carbon bonds in a one-
pot operation. The mechanism of the reactions is discussed.