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Reduction of Aldehydes and Ketones by Transition Metal Hydrides. Part 2. Reaction of trans,trans-[WH(CO)2(NO)(PMe3)2] with pyridine, functionalized aldehydes, and ketones

✍ Scribed by Adolphus A. H. Van Der Zeijden; Heinz Berke

Publisher: John Wiley and Sons
Year: 1992
Tongue: German
Weight: 526 KB
Volume: 75
Category: Article
ISSN: 0018-019X
DOI: 10.1002/hlca.19920750211

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✦ Synopsis

5.00 (q, J = 6.5, CHCH,); arom. H's hidden. I3C-NMR (C6D6): 24.7 (CH,); 69.5 ( C H C H ? ) ; 119.8 (C(5')); 121.7 (C(3')); 136.4 (C(4')); 148.4 (C(6')); C(2') not observed.

')

An alternative mechanism, that cannot be excluded, involves the intermediacy of a metallo-ester, formed by a reversible nucleophilic attack of the alkoxy moiety on an adjacent CO ligdnd.

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