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Synthesis of aza-β-lactams by rhodium carbenoid mediated cyclisation

✍ Scribed by Christopher J. Moody; Christopher J. Pearson; Geoffrey Lawton


Publisher
Elsevier Science
Year
1985
Tongue
French
Weight
109 KB
Volume
26
Category
Article
ISSN
0040-4039

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✦ Synopsis


Sumnary:

Treatment of the diazo-compounds (31, obtained in two steps from readily available hydrazine derivatives (11, with a catalytic amount of rhodium (II) acetate


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Rhodium carbenoid mediated cyclisations.
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Rhodium (II) acetate catalysed decomposition of the diazo sulphoxides (1) and ( 3) gives the cyclic sulphoxonium ylides ( 2) and ( 4); the structures of ( 2~) and (4a) were confirmed by X-ray crystallography.

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