28049-00-5Relevant articles and documents
Fluorous biphasic esterification directed towards ultimate atom efficiency
Xiang, Jiannan,Orita, Akihiro,Otera, Junzo
, p. 4117 - 4119 (2002)
Aperfectly selective esterification that discriminates between primary and sterically hindered or aromatic carboxylic acids occurs in the presence of the fluoroalkyldistannoxane [{Cl(C6F13CH2 CH2)2SnOSn(CH2CH2 -C6F13)2Cl}2] (1). The reaction gives 100% yield with a strict 1:1 ratio of the carboxylic acid and alcohol reactants, and the catalyst can be recycled without any loss of activity.
A practical and green chemical process: Fluoroalkyldistannoxane-catalyzed biphasic transesterification
Xiang, Jiannan,Toyoshima, Shinji,Orita, Akihiro,Otera, Junzo
, p. 3670 - 3672 (2007/10/03)
There is no need for the recovery of the catalyst in the fluorous biphasic transesterification catalyzed by [{Cl(C6F13CH2CH2)2 SnOSn(C6F13CH2CH2) 2Cl}2] (1; see scheme), which results in quantitative conversions and yields. An FC-72 solution of the dimeric flouroalkyldistannoxane 1 can be recycled repeatedly without having to recover the neat catalyst.