| Based on a mumber of literatures, the author have synthesized some dialkyltin carboxylates. To the best of our knowlege, these compounds have not been reported in before references. The compound (10) (n-C6F13CH2CH2)2 (OOCCH=CHPh)2 was synthesized by the reaction of difluoroalkyltin dichloride (n-C6F13CH2CH2)2SnCl2 with PhCH=CHCOOH, shown as eq 1.(C6F13CH2CH2)2SnO+ PhCH=CHCOOH →|(Et3N) (C6F13CH2CH2)2Sn(OOCCH=CHPh)2 (1)The other kinds of dialkylorganotin carboxylate compounds were synthezied by difluoroalkyltin oxide (n-C6F13CH2CH2)2SnO or dibutyltin oxide (n-C4H9)2SnO with RCOOH in high yields(6895%), shown as eq 2.All the compounds have been characterized by IR, 1H NMR. Some of them have been characterized by 13C NMR and 119Sn NMR. These compounds were classified to four type of structures {[ R2Sn(OOCR)]2 O}2 (A) or R2Sn(OOCR)2 (B) (OH in the molecular) or R2Sn(OOCR)4 (C) and R2Sn(OOCR)2 (D). The central stannnic atoms in A or B or C and D types presented different coordinate modes and coordinate numbers.In this thesis, we want to synthesize 1,2,4-oxadiazole-derivatives with quasiracemic synthesis in "one-pot". To meet with needs of fluorous tags in quasiracemic synthesis, the anthor have synthesized two compounds with differing fluorous chains and polarity as fluorous tags to tag starting materirls.
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