156630-35-2Relevant academic research and scientific papers
Synthesis and reactivity of some 4-bromo-2H-chromenes and 2H-thiochromenes
Gabbutt,Hartley,Hepworth,Heron,Kanjia,Rahman
, p. 2507 - 2522 (2007/10/02)
A facile synthesis of 4-bromo- 2H-chromenes and 2H-thiochromenes and of 1-bromo-3,4-dihydronaphthalene from the corresponding ketones and PBr3 is described. In some instances, significant quantities of the phosphonic acids (3) are isolated. Con
Expedient Synthesis of the Rotenoid and Thiorotenoid System
Gabbutt, Christopher D.,Hepworth, John D.,Heron, B. Mark
, p. 653 - 658 (2007/10/02)
A simple four-step synthesis of a 6,6-disubstituted 6a,12a-dihydro-6H,12H-benzopyranobenzopyran-12-one 6 from chroman-4-one 3 is described.Application of the synthetic strategy to a thiochroman-4-one leads to the 5-thiorotenoid system.
