π‐Facial Selectivity in the Formation of Tricarbonylchromium(0) Complexes of Estra‐1, 3, 5(10), 6‐tetraenes | Zendy

Dongol Krishna Gopal | Zendy; Melo e Silva M. Cristina | Zendy; Matsubara Kouki | Zendy; Matsumoto Taisuke | Zendy; Mataka Shuntaro | Zendy; Thiemann Thies | Zendy

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π‐Facial Selectivity in the Formation of Tricarbonylchromium(0) Complexes of Estra‐1, 3, 5(10), 6‐tetraenes

Author(s) -

Dongol Krishna Gopal,

Melo e Silva M. Cristina,

Matsubara Kouki,

Matsumoto Taisuke,

Mataka Shuntaro,

Thiemann Thies

Publication year - 2003

Publication title -

zeitschrift für anorganische und allgemeine chemie

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.354

H-Index - 66

eISSN - 1521-3749

pISSN - 0044-2313

DOI - 10.1002/zaac.200300017

Subject(s) - chemistry , steric effects , moiety , selectivity , stereoselectivity , stereochemistry , medicinal chemistry , catalysis , organic chemistry

The preparation of two η 6 ‐estra‐1, 3, 5(10), 6‐tetraene tricarbonylchromium complexes 4 and 6 are described. In both cases only one stereoisomer can be isolated, in contrast to other estrane‐tricarbonylchromium complexes, where complexations are non‐stereoselective. X‐ray crystal structural analysis of 4 discloses that only the more sterically hindered β ‐facial isomer is formed. It is assumed that the 6, 7‐olefinic moiety exerts a directive influence on the complexation.

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