- Tandem catalysis in the polycyclisation of dienes to produce multi-substituted tetrahydrofurans
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A new catalytic protocol has been established by using two separate oxidation reactions, catalysed by osmium, in tandem. Control of the pH and oxidation state of the metal is crucial in controlling this new sequence, which begins with a tethered aminohydr
- Donohoe, Timothy J.,Lindsay-Scott, Peter J.,Parker, Jeremy S.
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scheme or table
p. 3523 - 3526
(2009/10/26)
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- MAGNESIUM-OPPENAUER OXIDATION OF ALCOHOLS TO ALDEHYDES AND KETONES
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Using a magnesium-Oppenauer oxidation aldehydes and ketones are prepared from halomagnesium alkoxides, which in turn are the products of Grignard reactions.
- Byrne, Brian,Karras, Michael
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p. 769 - 772
(2007/10/02)
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- A New Synthesis of Nona-2E,6Z-dienal
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Monosodio ethyl malonate on alkylation with 1-bromo-pent-2-yne (III) furnishes the diester (IV) which on decarbethoxylation with NaCl/DMSO, followed by LAH/EtOH reduction of the resultant ester (V), yields the carbinol (VI).Hydrogenation of VI in the presence of Lindlar's catalyst produces hept-4Z-en-1-ol (VII), which on pyridinium chlorochromate oxidation gives the aldehyde (VIII).Wittig-Horner reaction on VIII using ethyl diethylphosphonoacetate produces the dienoate (IX), which on LAH/EtOH reduction followed by oxidation with Corey's reagent, affords the title compound(I).
- Vig, O. P.,Sharma, M. L.,Gauba, Rita
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p. 313 - 314
(2007/10/02)
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