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Photochemische Reaktionen. 28. Mitteilung [1] . UV.‐Bestrahlung von 11‐Oxo‐Steroiden IV. 3,20‐Di‐äthylendioxy‐11‐oxo‐C‐nor‐5α‐pregnan
Author(s) -
Iriarte J.,
Schaffner K.,
Jeger O.
Publication year - 1964
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19640470520
Subject(s) - chemistry , isomerization , aldehyde , solvent , ultraviolet , stereochemistry , ultraviolet light , photochemistry , organic chemistry , catalysis , physics , quantum mechanics
In contrast to the light‐induced formation of 11,19‐t‐cyclobutanol derivatives from 11‐oxo‐pregnanes, the saturated 11‐oxo‐C‐nor‐pregnane 5 is converted rapidly and quantitatively into the unsaturated aldehyde 6 upon ultraviolet irradiation in solution. The isomerization is independent of the nature of the solvent and is largely unaffected by the presence of molecular oxygen.