89889-20-3Relevant articles and documents
Preparation of (perfluoroalkyl)alkane thiols via Zemplén deacylation of fluorous (perfluoroalkyl)alkyl thioacetates
Menczinger, Bálint,Nemes, Anikó,Szíjjártó, Csongor,Rábai, József
, p. 70 - 77 (2018/03/21)
Convenient and robust synthesis of (perfluoroalkyl)alkane thiols [(CnF2n+1(CH2)mSH); m/n = 3/4,6,8,10, 4a-d; m/n = 2/6, 8; m/n = 1/1,2,3,7,8H, 12a-e] was developed starting from commercially available fluorous alcohols (1a-d, 5, 9a-e). The intermediate (perfluoroalkyl)alkyl iodides and/or sulfonates were reacted with potassium thioacetate in DMF, and the resulting thioacetates were deacetylated by a Zemplén analogue reaction. The (perfluoroalkyl)alkane thiols were obtained in good overall yields and high purity.
Fluorous dimethylthiocarbamate (FDMTC) protecting groups for alcohols
Kojima, Masaru,Nakamura, Yutaka,Ishikawa, Takuma,Takeuchi, Seiji
, p. 6309 - 6314 (2007/10/03)
N,N-Bis(perfluoroalkyl)thiocarbamoyl chlorides (FDMTC-Cls) were synthesized as reagent for the protection of alcohols. Using the crystalline FDMTC-Cls, the FDMTC groups were introduced into the alcohol molecules in excellent yields in the presence of sodium hydride in THF at room temperature. The products were separated from the excess alcohols by solid-phase extraction with a fluorous reverse-phase silica gel column (Fluorous Solid Phase Extraction; FSPE). The FDMTC groups were readily removed by oxidation with m-chloroperbenzoic acid (m-CPBA) and subsequent hydrolysis with KHCO3.