570390-94-2Relevant articles and documents
A more than the penem matching bends down the ester side chain new synthetic method
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Paragraph 0028; 0032-0033, (2017/08/25)
The invention discloses a novel synthetic method of a tebipenem pivoxil side chain. The method employs cheap and easily available raw material, has simple experimental operations, high overall yield and is applicable to industrialized production.
Truly catalytic and chemoselective cleavage of benzylidene acetal with phosphomolybdic acid supported on silica gel
Kumar, Ponminor Senthil,Kumar, Gaddale Devanna Kishore,Baskaran, Sundarababu
supporting information; scheme or table, p. 6063 - 6067 (2009/05/27)
Phosphomolybdic acid supported on silica gel provides a truly catalytic method for the chemoselective cleavage of benzylidene acetals having sensitive functional groups under mild conditions. It is easy to perform on large scale owing to minimal catalyst loading (0.5 mol-%). Several sensitive functional groups such as TBDPS ether, -OMs, -OAc, allyl ether, N-Boc, N-Fmoc and N-Cbz are stable under the reaction conditions. In addition, benzylidene acetal is selectively cleaved in the presence of isopropylidene ketal. Wiley-VCH Verlag GmbH & Co. KGaA, 2008.