A series of 1- and 2-substituted indenyl ligands were prepared and used in the synthesis of 1-R-Ind
2ZrCl
2 R=Me (
2b), Et (
4b),
i
Pr (
5b),
t
Bu (
6b), SiMe
3 (
8b), Ph (
10b), Bz (
12b), 1-Naph (
...14b) and 2-R-Ind
2ZrCl
2 R=Me (
1b), Et (
3b), SiMe
3 (
7b), Ph (
9b), Bz (
11b), 1-Naph (
13b) metallocenes. An X-ray crystallographic study of
4b and
10b showed the complexes to be the
racemic diastereomers (
4b, both the
R,
R and
S,
S-enantiomers and
10b, the
S,
S-enantiomer). The X-ray data together with NMR spectral data revealed that the size of the substituent influenced the orientation the two indenyl ligands of the metallocenes. The
4b diastereomers are both found to crystallize with their ethyl groups
syn (bis-central) with respect to each other whereas the larger phenyl groups in
10b results in an
anti (bis-lateral) orientation of the indenyl ligands.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NUK, OILJ, SAZU, SBCE, SBJE, UL, UM, UPCLJ, UPUK
The title compound, C17H27O7P, is an important intermediate in the synthesis of an oxygen analogue of the michellamines, which are bisbiaryl naphthylisoquinoline alkaloids with anti‐HIV ...activities. The crystal structure of the title compound confirms the relative trans stereochemistry of the methyl substituents in the heterocycle, as well as the position of the phosphate ester at the C‐5 atom of the isochromane system.
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Available for:
BFBNIB, FZAB, GIS, IJS, KILJ, NLZOH, NUK, OILJ, SAZU, SBCE, SBMB, UL, UM, UPUK
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