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Dewatering three acres with 13 pumps


Book ID
108423865
Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
122 KB
Volume
2008
Category
Article
ISSN
0262-1762

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Synthesis of 13C-labelled medroxyprogest
โœ P. Narasimha Rao; Kalyani M. Damodaran ๐Ÿ“‚ Article ๐Ÿ“… 1982 ๐Ÿ› John Wiley and Sons ๐ŸŒ French โš– 493 KB

## Abstract 17ฮฑโ€Hydroxyprogesterone (__**2**__) was converted to an enolโ€lactone __**8**__ in which the 20โ€oxo group was selectively protected as an ethylene acetal. The enolโ€lactone __**8**__ was subjected to Claisen condensation with phenl acetateโ€1,2โ€^13^C~2~ in the presence of sodium hydride, w