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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

✍ Scribed by Gholamhosein H. Hakimelahi; Charles B. Boyce; Hamid S. Kasmai

Publisher: John Wiley and Sons
Year: 1977
Tongue: German
Weight: 357 KB
Volume: 60
Category: Article
ISSN: 0018-019X
DOI: 10.1002/hlca.19770600206

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✦ Synopsis

Abstract

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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