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Photolytic closure of 4,5‐diphenyl‐oxazol‐2‐ones to phenanthro[9,10‐d]oxazol‐2‐ones and an improved synthesis of benzoins
Author(s) -
Hakimelahi Gholamhosein H.,
Boyce Charles B.,
Kasmai Hamid S.
Publication year - 1977
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.19770600206
Subject(s) - chemistry , solvent , closure (psychology) , photodissociation , medicinal chemistry , organic chemistry , market economy , economics
The synthesis of phenathrenes substituted by nitrogen and oxygen atoms in position 9 and 10 by photolysis of 4,5‐diphenyl‐oxazol‐2‐ones (cf. Scheme 4 ) is described. Moreover an improved general procedure for the synthesis of benzoins in aprotic solvent (tetra‐ t ‐butylammonium cyanide in DMF/DMSO) is developed.
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