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1.
Acta Crystallogr C ; 64(Pt 4): m147-8, 2008 Apr.
Article in English | MEDLINE | ID: mdl-18391373

ABSTRACT

The tricarbonylchromium unit bound to the arene ring of the chiral title complex, [Cr(C(19)H(26)O(3))(CO)(3)], is rotated by ca 25 degrees in agreement with the proposed mechanism for 1,5-asymmetric induction of nucleophilic attack.


Subject(s)
Bridged Bicyclo Compounds/chemistry , Chromium Compounds/chemistry , Crystallography, X-Ray , Models, Molecular , Molecular Structure
2.
Org Lett ; 6(13): 2121-4, 2004 Jun 24.
Article in English | MEDLINE | ID: mdl-15200300

ABSTRACT

[reaction: see text] Vicinal stereocontrol during nucleophilic addition of tert-butyl lithiopropionate to eta(6)-anisole chromium tricarbonyl complexes with differing para substituents has been studied. Excellent vicinal double stereoinduction (>99:1) was observed when the para substituent was Si(CH(3))(3), and this has been applied to a stereoselective formal synthesis of (+/-)-erythro Juvabione. Asymmetric synthesis by chiral auxiliary directed nucleophilic addition is also discussed.


Subject(s)
Chromium/chemistry , Cyclohexanes/chemical synthesis , Organometallic Compounds/chemistry , Hempa , Organometallic Compounds/chemical synthesis , Stereoisomerism
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