93500-92-6Relevant articles and documents
Synthesis of 3-Arylcoumarins, Thiacoumarins and Carbostyrils
Natarajan, M.,Manimaran, T.,Ramakrishnan, V. T.
, p. 529 - 534 (2007/10/02)
3-Arylcarbostyrils (2a-f), coumarins (2g-j) and thiacoumarin (2k) have been prepared by a generalised method from α,β-dibromohydrocinnamoyl derivatives (1a-k).The intermediate dihydrocoumarins and dihydrocarbostyrils (3, Y = O, NH) have been prepared which on acid treatment furnish 2.However, treatment of 3 with a base affords the 4-arylcoumarins and carbostyrils (4).