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Stereoselective synthesis of (R)-(−)-2,2-dimethyl-3-t-butoxycarbonyl-4-ethynyl-oxazolidine: a chiral building block for the synthesis of a new class of substituted alkynes

✍ Scribed by Gianna Reginato; Alessandro Mordini; Alessandro Degl'Innocenti; Massimo Caracciolo

Publisher: Elsevier Science
Year: 1995
Tongue: French
Weight: 271 KB
Volume: 36
Category: Article
ISSN: 0040-4039
DOI: 10.1016/0040-4039(95)01725-w

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37 8C) and the mixture was filtered in a UltraFree MC 30 000 MWCO centrifugal filtration unit (Millipore) at 3500 g for 7 min at 37 8C. The concentration of free substrate in the filtrate was quantified by ICP-MS and the bound fraction was calculated as % bound ([total]-[free])/[total]. The proton T