27437-97-4Relevant articles and documents
Synthesis of novel photochromic 6-benzyloxo-spirobenzopyran compounds
Elizalde, Luis E.,De Los Santos, Gladys,Garcia, Aida E.,Medellin, Diana I.,Acosta, Ricardo
, p. 3087 - 3097 (2007/10/03)
The synthesis of four novel derivatives of 1′,3′,3′- trimethylspiro-[2H-1]-benzopyran-6-benzyloxo-2,2′-indoline is reported. The synthetic approach to these compounds involves the preparation of the key compound, 3-formyl-4-hydroxybenzophenone, by means o
