名称:
                                Reinvestigation of prototropic photochromism: 3-benzoyl-2-benzylchromones
                             
                            
                                摘要:
                                The synthesis of a series of new nine 3-benzoyl-2-benzylchromones is developed through a classical and an optimized Kostanecki-Robinson method involving an o-hydroxyphenyl-beta-diketone and an acid anhydride. The different spectrokinetic studies carried out in solution and in polymer matrixes have highlighted the main structure/photochromic parameters relationships and the influence of the medium on the photochromic properties. (C) 2003 Elsevier Ltd. All rights reserved.
                             
                                                            
                                    DOI:
                                    10.1016/s0040-4020(03)01211-0