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The decarbomethoxylation reactions of MeOCOCF_2SO_2F (1) can be induced readily by a varietyof nucleophiles. For example, X~- (Cr~-, Br~-, I~-), CNS~-, Et_3N, C_5H_5N make facile attack onmethyl carbon of 1 with subsequent elimination of CO_2, SO_2 and F~- resulting in generation of CF_2:. Innonaqueous organic solvents fragmentation of 1 was extremely fast and apparently might take place withsimultaneous elimination of SO_2 and F~- and formation of CF_2:. In aqueous organic solvents the inter-mediate FSO_2CF_2~- may be trapped by protonation into HCF_2SO_2F (2) as well as predominantly furthereliminate SO_2 and F~- yielding CF_2:. Alkoxide ions could not decompose 1 to produce CF_s:, but wereable to attack the sulfur atoms to afford the corresponding sulfonates, MeOCOCF_2SO_2Z (10) (Z=OCH_2-CF_2CF_2H, OC_6H_5). In the absence of solvent Et_2NH mainly induced the decomposition of 1 to form CF_2:with some attack on carboxyl carbon to give the corresponding amide FO_2SCF_2CONE_(t2).
The decarbomethoxylation reactions of MeOCOCF_2SO_2F (1) can be induced readily by a variety of nucleophiles. For example, X ~ - (Cr ~ -, Br ~ -, I ~), CNS ~ -, Et_3N, C_5H_5N make facile attack on methyl carbon of 1 with subsequent elimination of CO_2, SO_2 and F ~ - in in generation of CF_2 :. Innonaqueous organic solvents fragmentation of 1 was extremely fast and apparently might take place with simultaneous elimination of SO_2 and F ~ - and formation of CF_2 :. In aqueous organic The inter-mediate FSO_2CF_2 ~ - may be trapped by protonation into HCF_2SO_2F (2) as well as predominantly furthereliminate SO_2 and F ~ - yielding CF_2 :. Alkoxide ions could not decompose 1 to produce CF_s :, but were able to attack the sulfur atoms to afford the corresponding sulfonates, MeOCOCF_2SO_2Z (10) (Z = OCH_2-CF_2CF_2H, OC_6H_5). In the absence of solvent Et_2NH mainly induced the decomposition of 1 to form CF_2: with some attack on carboxyl carbon to give the corresponding amide FO_2SCF_2CONE_ (t2 ).